The cabin latch mechanism of civil aircraft is to prevent the door accidentally open parts. When a jam occurs forced operation, it will produce a greater internal force. The equipment door latch mechanism is all stem shape and load is small except the connecting rod bracket. Connecting rod bracket structure is complex and load is bigger. Based on analyzingresistance load ,using the finite element analysis software HyperMesh and Opti-Struct ,three kinds of structure forms of connecting rod bracket are simulated. With comparison and analysis, connecting rod bracket structure satisfied equipment doors functional requirements and prototype test purpose, which provides reference for the follow-up of the real product design.