1. The title of the title certificate letter usually consists of the following two ways: 1. The title is written in the language name alone, and the words "certification letter" and "proof" are generally added in the middle of the first line. 2. By the language name and reason * * *, generally written in the middle of the first line. Such as "proof of Comrade XX's situation (or problem)". 2. Address: Write the recipient's name or the recipient's name in the top box of the second line, and then add a colon. Because there is no fixed recipient in some certification letters for the relevant personnel to prove their identity when they go out, the address of the recipient can not be written at the beginning, but the text content can be caused by the introduction word "zi" in front of the text. Third, the text, the text should be written on another line after the address and written in two spaces. Write according to the main points required by the other party, prove what you want to prove, and don't write other irrelevant questions. If you prove someone's historical problems, write down his name, time, place and experience; To prove an event, you need to write down the names and identities of the participants, their position and role in the event, and the cause and effect of the event itself. In other words, write clearly the true colors of people and things. ? After the text is finished, you should start a new line and write the words "This is to certify" in the top box. You can also write it directly at the end of the article. 4. Signature means signature and date of writing. The name and title of the certifying unit or individual should be written on the lower right of the text, and the date of writing should be written on a new line below the signature, and then the certifying unit or witness will affix the official seal or sign and seal, otherwise the letter of certification will be invalid.