The inquiry method of medical insurance consultation electronic invoice is as follows: 1. First, open Alipay in your mobile phone, go to the home page, and click "More" to enter more applications; 2. Click "City Service" in more application interfaces to enter the city service page; 3. Locate the city as its own location on the city service page, and click "Medical Insurance electronic certificate"; 4. On the medical insurance electronic certificate page, click "Agree to the agreement and activate"; 5. After the authorization is activated, you can receive the "Electronic Certificate of Medical Insurance", which can be viewed in "Card Package-Certificate"; 6. When you need to use it, enter the card package, find "Medical Insurance electronic certificate", and click Use Now. Electronic medical insurance certificate, issued by the national medical insurance information platform, is a medical insurance identification electronic medium generated for all insured persons based on the basic medical insurance information base. The electronic certificate adopts real name/real person authentication technology and encryption algorithm to form an electronic logo, which has important characteristics such as safety, reliability and unique authentication. Insured persons can enjoy all kinds of online medical security services through electronic certificate, including medical insurance business handling, medical insurance account inquiry, medical insurance benefits, drug purchase and payment, etc.