The invention relates to the field of indoor geotechnical testing of the civil engineering discipline, particularly to a quadruple spiral descending type electric demoulding device for a direct shearing sample. The device comprises a power mechanism, a demoulding table and a demoulding mechanism. The demolding mechanism includes a lifting rotary shaft connecting cylinder and a ring cutter fixing cylinder; the lifting rotary shaft connecting cylinder is arranged at the ring cutter fixing cylinder and is connected with the power mechanism; the power mechanism controls the demoulding mechanism tomove up and down; and the ring cutter fixing cylinder is used for fixing a ring cutter sample. The demoulding table is arranged below the ring cutter fixing cylinder. When the demoulding mechanism moves down, the demoulding table can only stop a sample in the ring cutter sample instead of the ring cutter at the outer ring, so that the ring cutter and the sample are separated. Therefore, problemsof too large disturbance on the sample in the demoulding process, low identity after ring cutter sample demoulding, and single one-time demoulding number for the existing demoulding device are solved.