The triangular mesh model requires a lot of information to record points, the connection between the edge and face relations,and the complex  models  require a lot of storage space,and  the network transmission speed is slower. Triangular mesh model simplification is significant  for its storage,processing,transmission and realtime rendering. In this paper,on the basis of the relevant technical studies,a simplified algorithm based on triangle removal is designed. The algorithm first calculates the weight of the triangle,according to the weight difference  to remove the corresponding triangular mesh model  region,and then rebuilds the deleted  region by triangular mesh reconstruction. Finally,two examples discussed in the original mesh model and the simplified mesh model comparison show that the design of this mesh simplification algorithm  effectively implements the triangular mesh model simplification,maintains  the basic features of the original  triangular mesh model,increases  the simplification  efficiency,and achieves a satisfactory result.