Automatic needle inserting and assisting device for injection needle

The invention discloses an automatic needle inserting and assisting device for an injection needle. The automatic needle inserting and assisting device comprises a rotary switch, a shell connected with the rotary switch in a clamped mode and a needle handle clamping device arranged in the shell. The rotary switch and the shell are both of a hollow cylinder structure. A circumferential clamping groove and two clamping ports which are symmetrically arranged and are communicated with the clamping groove are formed in the outer side of the rotary switch; two clamping heads are symmetrically arranged on the inner side wall of the upper portion of the shell, and the clamping heads enter the clamping grooves in a rotating mode through the clamping openings, so that the rotary switch and the shell are connected together in a clamped mode. The needle head can be rapidly implanted by rotating the rotary switch, so that the use efficiency is improved, the pain of needle insertion is relieved, and the needle hole infecti