Abstract: A method for avoiding file deadlock during concurrent access of a sqlite database is disclosed, wherein, in a software design stage, divide the client sqlite database from one into two or more, and each sqlite database is corresponding to the requirement of a certain type of writing operation of the software system. Respectively classify all the data tables used in the software according to the different types of writing operation and place them in different sqlite database files. This could ensure that different types of writing operations are respectively corresponding to different files, and when multiple threads of the application software generate writing operations at the same time, since they respectively write into different physical disk files, so as to avoid the problem that one sqlite database file cannot be concurrently written by multiple threads at the same time.