The invention relates to the field of liquid crystal technology, and more particularly to an alignment film being applied in a PSVA liquid crystal display panel and including a first branched chain M and a second branched chain Q bonded on polyimide as a main chain and thus having a structure as shown in the following formula: The first branched chain M is a group applied to deflect the liquid crystal in a distribution state; the second branched chain Q is a group containing nitrobenzophenone or benzoquinonyl. The invention also provides a liquid crystal display panel using the alignment film. The invention can effectively suppress the broken bright point issue of panel and thereby improve panel quality.