A drop-resistant relay and automatic assembly method, including a housing, coils, armature, yoke and pressing spring; the coil is horizontally mounted and contained in the enclosure; the arch; the L type is formed of vertical and horizontal plates connected to the armature and bending plates in the pressing spring to prevent the deformation of the spring caused by the relay falling impact in the length direction. The present invention can prevent the deformation of the pressure spring caused by the relay falling impact in the length direction, thus prevent the relay function failure, and promote the card automatic assembly, and prevent the deformation cause by the pressure spring force in the assembly process, and then affect the relay function parameters, thus effectively improving the relay assembly stability and product reliability.