Biography is generally the work of a professional creative team, and the characters are the third person.

Memoirs are usually dictated by the protagonist and processed by others (of course, I can also write them myself), and the characters are usually in the first person.

2. From the perspective of language and style.

Biography language is literary, professional and readable, and its style may be related to the characteristics of professional creative teams.

Memoirs are generally the protagonist's language, which will be colloquial and dialectal.

3. From the perspective of social influence.

Biographies generally have official domestic book numbers, which can be publicly distributed in Xinhua Bookstore all over the country, with better circulation, social effect and publicity effect. But the cost will be relatively high.

Memoirs generally do not need book numbers, and their circulation is relatively small, even limited to family members or acquaintances, and their social impact is relatively small. The cost is lower.

References:

Baidu encyclopedia-memoirs

Baidu encyclopedia-autobiography