An efficient terminal crimping device for a plurality of leads includes an upper die and a lower die. A two-end pressing plate is arranged on the upper die, a one-end pressing device is arranged on the lower die, the two-end pressing plate is in inverted-concave-shaped, the one-end pressing device includes two parts, i.e., a protruding block and a sunken block, the lower end of the two-end pressing plate is provided with a clamping device, the clamping device includes a clamping block, the clamping bock is connected with a cylinder and moves in a guide groove, each terminal putting mechanism includes a terminal slot, a terminal and a photosensitive inductor, an inclined block is arranged in the terminal slot, and a spring is arranged on the inclined block. The efficient terminal crimping device for a plurality of leads has the following beneficial effects: terminals of three branch leads on a main lead can be crimped at the same time, production efficiency is improved, the length of the branch leads that are put in is checked, that the parts of the leads that are put in are long enough is guaranteed, the terminals are pressed by the inclined block, a pressing effect is good, and arejection rate is greatly reduced.