1. Log on to Gucci's official website.

2. Select the goods you want to buy and add them to the shopping cart.

3. In the shopping cart page, confirm your product information and delivery address.

4. Click the "checkout" button to enter the settlement page.

5. On the settlement page, fill in your shipping address, credit card information and other information, and submit the order.

6. Confirm the order information and complete the payment.

It should be noted that when purchasing Gucci products in official website, Japan, you need to pay by credit card, and you need to pay certain taxes and international freight. In addition, due to Japanese legal restrictions, some goods may not be available for purchase.