diff --git a/beike/Services/CurrencyService.php b/beike/Services/CurrencyService.php
new file mode 100644
index 00000000..76cb072d
--- /dev/null
+++ b/beike/Services/CurrencyService.php
@@ -0,0 +1,208 @@
+<?php
+/**
+ * TaxService.php
+ *
+ * @copyright  2022 opencart.cn - All Rights Reserved
+ * @link       http://www.guangdawangluo.com
+ * @author     Edward Yang <yangjin@opencart.cn>
+ * @created    2022-07-21 16:29:54
+ * @modified   2022-07-21 16:29:54
+ */
+
+namespace Beike\Services;
+
+use Beike\Models\Address;
+use Beike\Models\TaxRate;
+use Beike\Models\TaxRule;
+
+class TaxService
+{
+    private $taxRates = array();
+    private static $taxRules;
+
+    const AVAILABLE_TYPES = ['shipping', 'payment', 'store'];
+
+    public function __construct($data = array())
+    {
+        $countryId = system_setting('base.config_country_id');
+        $zoneId = system_setting('base.config_zone_id');
+
+        $shippingAddress = $data['shipping_address'] ?? null;
+        $paymentAddress = $data['payment_address'] ?? null;
+
+        if ($shippingAddress) {
+            if ($shippingAddress instanceof Address) {
+                $this->setShippingAddress($shippingAddress->country_id, $shippingAddress->zone_id);
+            } elseif ($shippingAddress instanceof \ArrayObject) {
+                $this->setShippingAddress($countryId, $zoneId);
+            } else {
+                $this->setShippingAddress($shippingAddress['country_id'], $shippingAddress['zone_id']);
+            }
+        } elseif (system_setting('base.config_tax_default') == 'shipping') {
+            $this->setShippingAddress($countryId, $zoneId);
+        }
+
+        if ($paymentAddress) {
+            if ($paymentAddress instanceof Address) {
+                $this->setPaymentAddress($paymentAddress->country_id, $paymentAddress->zone_id);
+            } elseif ($paymentAddress instanceof \ArrayObject) {
+                $this->setShippingAddress($countryId, $zoneId);
+            } else {
+                $this->setPaymentAddress($paymentAddress['country_id'], $paymentAddress['zone_id']);
+            }
+        } elseif (system_setting('base.config_tax_default') == 'payment') {
+            $this->setPaymentAddress($countryId, $zoneId);
+        }
+
+        $this->setStoreAddress($countryId, $zoneId);
+    }
+
+    public static function getInstance($data = array())
+    {
+        return new self($data);
+    }
+
+    private function getTaxRules($type, $countryId, $zoneId)
+    {
+        if (self::$taxRules !== null && isset(self::$taxRules["$type-$countryId-$zoneId"])) {
+            return self::$taxRules["$type-$countryId-$zoneId"];
+        }
+
+        $customerGroupId = (int)system_setting('base.config_customer_group_id');
+        $sqlBuilder = TaxRule::query()
+            ->leftJoin('tax_rate', 'tax_rule.tax_rate_id', '=', 'tax_rate.tax_rate_id')
+            ->join('tax_rate_to_customer_group', 'tax_rate.tax_rate_id', '=', 'tax_rate_to_customer_group.tax_rate_id')
+            ->leftJoin('zone_to_geo_zone', 'tax_rate.geo_zone_id', '=', 'zone_to_geo_zone.geo_zone_id')
+            ->leftJoin('geo_zone', 'tax_rate.geo_zone_id', '=', 'geo_zone.geo_zone_id')
+            ->select('tax_rule.*', 'tax_rate.*')
+            ->where('tax_rule.based', $type)
+            ->where('tax_rate_to_customer_group.customer_group_id', $customerGroupId)
+            ->where('zone_to_geo_zone.country_id', $countryId)
+            ->where(function ($query) use ($zoneId) {
+                $query->where('zone_to_geo_zone.zone_id', '=', 0)
+                    ->orWhere('zone_to_geo_zone.zone_id', '=', (int)$zoneId);
+            })
+            ->orderBy('tax_rule.priority');
+        $data = $sqlBuilder->get();
+        self::$taxRules["$type-$countryId-$zoneId"] = $data;
+        return $data;
+    }
+
+    private function setAddress($type, $countryId, $zoneId)
+    {
+        if (!in_array($type, self::AVAILABLE_TYPES)) {
+            throw new \Exception('invalid tax types');
+        }
+
+        $data = $this->getTaxRules($type, $countryId, $zoneId);
+
+        foreach ($data as $result) {
+            $this->taxRates[$result->tax_class_id][$result->tax_rate_id] = array(
+                'tax_rate_id' => $result->tax_rate_id,
+                'name' => $result->name,
+                'rate' => $result->rate,
+                'type' => $result->type,
+                'priority' => $result->priority
+            );
+        }
+    }
+
+    public function unsetRates()
+    {
+        $this->taxRates = array();
+    }
+
+    public function setShippingAddress($countryId, $zoneId)
+    {
+        $this->setAddress('shipping', $countryId, $zoneId);
+    }
+
+    public function setPaymentAddress($countryId, $zoneId)
+    {
+        $this->setAddress('payment', $countryId, $zoneId);
+    }
+
+    public function setStoreAddress($countryId, $zoneId)
+    {
+        $this->setAddress('store', $countryId, $zoneId);
+    }
+
+    /**
+     * $tax = \App\Models\Library\Tax::getInstance();
+     * $tax->setShippingAddress(1, 0);
+     * $tax->calculate(123.45, 9, $tax->config->getValue('config_tax'))
+     *
+     * @param $value
+     * @param $taxClassId
+     * @param bool|true $calculate
+     * @return mixed
+     */
+    public function calculate($value, $taxClassId, bool $calculate = true)
+    {
+        if ($taxClassId && $calculate) {
+            $amount = 0;
+            $taxRates = $this->getRates($value, $taxClassId);
+            foreach ($taxRates as $taxRate) {
+                if ($calculate != 'P' && $calculate != 'F') {
+                    $amount += $taxRate['amount'];
+                } elseif ($taxRate['type'] == $calculate) {
+                    $amount += $taxRate['amount'];
+                }
+            }
+            return $value + $amount;
+        } else {
+            return $value;
+        }
+    }
+
+    public function getTax($value, $taxClassId)
+    {
+        $amount = 0;
+        $taxRates = $this->getRates($value, $taxClassId);
+        foreach ($taxRates as $taxRate) {
+            $amount += $taxRate['amount'];
+        }
+        return $amount;
+    }
+
+    public function getRateName($taxRateId)
+    {
+        $taxRate = TaxRate::query()->find($taxRateId);
+        if ($taxRate) {
+            return $taxRate->name;
+        } else {
+            return false;
+        }
+    }
+
+    public function getRates($value, $taxClassId)
+    {
+        $taxRateData = array();
+
+        if (isset($this->taxRates[$taxClassId])) {
+            foreach ($this->taxRates[$taxClassId] as $taxRate) {
+                if (isset($taxRateData[$taxRate['tax_rate_id']])) {
+                    $amount = $taxRateData[$taxRate['tax_rate_id']]['amount'];
+                } else {
+                    $amount = 0;
+                }
+
+                if ($taxRate['type'] == 'F') {
+                    $amount += $taxRate['rate'];
+                } elseif ($taxRate['type'] == 'P') {
+                    $amount += ($value / 100 * $taxRate['rate']);
+                }
+
+                $taxRateData[$taxRate['tax_rate_id']] = array(
+                    'tax_rate_id' => $taxRate['tax_rate_id'],
+                    'name' => $taxRate['name'],
+                    'rate' => $taxRate['rate'],
+                    'type' => $taxRate['type'],
+                    'amount' => $amount
+                );
+            }
+        }
+
+        return $taxRateData;
+    }
+}
diff --git a/beike/Shop/Http/Controllers/CurrencyController.php b/beike/Shop/Http/Controllers/CurrencyController.php
new file mode 100644
index 00000000..33310bad
--- /dev/null
+++ b/beike/Shop/Http/Controllers/CurrencyController.php
@@ -0,0 +1,25 @@
+<?php
+/**
+ * CurrencyController.php
+ *
+ * @copyright  2022 opencart.cn - All Rights Reserved
+ * @link       http://www.guangdawangluo.com
+ * @author     TL <mengwb@opencart.cn>
+ * @created    2022-07-28 16:21:14
+ * @modified   2022-07-28 16:21:14
+ */
+
+namespace Beike\Shop\Http\Controllers;
+
+use Beike\Repositories\CurrencyRepo;
+
+class CurrencyController extends Controller
+{
+    public function index($lang)
+    {
+        if (array_key_exists($lang, CurrencyRepo::all()->where('status', true)->pluck('code'))) {
+            Session::put('currency', $lang);
+        }
+        return Redirect::back();
+    }
+}