The invention relates to a symmetrical riveting device for pins. The riveting device comprises a die shank, a left oblique block, a right oblique block, a positioning piece, a left concave die core, a right concave die core, a left centre, a right centre, a left spring, a right spring, a product assembly, a cushion block, a clamping plate, a threaded rod, a fixed plate and a base plate. The die shank is located at the uppermost end of the whole riveting device. The left oblique block and the right oblique block are fixed to the two opposite ends of the die shank correspondingly, and an oblique surface of the left oblique block and an oblique surface of the right oblique block are arranged correspondingly. The positioning piece is fixed to a corresponding position of the base plate and used for limiting the longitudinal position of the product assembly. The left concave die core and the right concave die core are oppositely fixed to the fixed plate. The fixed plate is fixed to the base plate. The two centres are matched with the two springs correspondingly and can move in corresponding concave die core limiting grooves. The symmetrical riveting device is improvement made by technicians based on a traditional method, the machining efficiency of products can be improved, and the product quality can be guaranteed, so that the symmetrical riveting device is particularly suitable for requirements of batch production.