To pay with a medical insurance card, you need to bind the medical insurance card first, then choose to pay with the medical insurance card during settlement, and enter the payment password or perform identity verification.

1. Bind the medical insurance card 1. Open the Dingdang Medicine Buying APP or visit its official website and log in to your personal account.

2. Find the "Bind Medical Insurance Card" option in account settings or payment management, and click to enter.

3. According to the prompts on the page, enter your medical insurance card number, name, ID number and other relevant information.

4. After submitting the information, wait for system verification and successful binding.

2. Select medicines and settle payment 1. Browse on the Dingdang medicine buying platform, select the medicines you need, and add them to the shopping cart.

2. Enter the shopping cart page, confirm that the drug information and quantity are correct, and click "Checkout".

3. On the settlement page, select the "Pay with medical insurance card" option.

4. Enter your medical insurance card payment password (if set) or perform identity verification.

5. After confirming that the payment amount is correct, click the "Pay" button.

3. Successful payment and medicine collection 1. After successful payment, you will receive a prompt message indicating successful payment.

2. According to the delivery policy of Dingdang Medicine, you can choose to pick up the medicine yourself or wait for the medicine to be delivered to your door.

3. When picking up medicine, please bring your medical insurance card or relevant vouchers for verification.

To sum up: Dingdang needs to bind the medical insurance card to pay with the medical insurance card when buying medicine, then choose to pay with the medical insurance card during settlement, and enter the payment password or perform identity verification.

After successful payment, you can choose to pick up the medicine yourself or wait for the medicine to be delivered to your door.

Please make sure your medical insurance card is activated and has online payment capabilities to successfully complete the payment process.

Legal basis: Article 28 of the "Social Insurance Law of the People's Republic of China" stipulates: Medical expenses that meet the basic medical insurance drug catalog, diagnosis and treatment items, medical service facility standards, and emergency and rescue medical expenses shall be covered by the basic medical insurance in accordance with national regulations.

Paid from the fund.

Article 52 of the "E-Commerce Law of the People's Republic of China" stipulates: E-commerce parties may agree to use electronic payment methods to pay the price.

Electronic payment service providers that provide electronic payment services for e-commerce must abide by national regulations, ensure payment security, and safeguard the legitimate rights and interests of the parties.

Specific management measures shall be stipulated by the State Council.

Article 44 of the "Cybersecurity Law of the People's Republic of China" stipulates: No individual or organization may steal or obtain personal information in other illegal ways, and may not illegally sell or illegally provide personal information to others.