This paper analyzes the event types, event structures of serial verb with the event theory, and analyzes the event semantics of serial verb. The surface structure of serial verb is composed of two sub-events with different semantic relations, which are mainly reflected in the relative time structure, event types and event semantic structures. Different time structures are the basis of combination of different event types. Event semantic structure is realized through the cross use of sub-events and internal arguments of sub-events. In this paper, triples and quads are adopted to structure event semantics.