Spin is a very complex rotational flight state when aircraft angle of attack is larger than stall incidence.This kind of flight state often causes aircraft loss control and prang, so civil aircraft is not allowed into spin state during the normal flight. Due to lots of reasons, spin accidents for civil aircraft still happen from time to time. This paper collects some cases of spin accidents for civil aircraft in the past, and clearly presents the approximately process of these accidents. This work is quite useful for avoiding the civil aircraft spin accidents.