The invention relates to a bridge connection structure and a torque measurement method, in particular to a bridge connection structure for measurement while drilling and the torque measurement method,and belongs to the technical field of drilling. The bridge connection structure for the measurement while drilling comprises a plurality of torque measuring sensors arranged on a drill collar body atequal intervals and coaxially with each other. A plurality of torque strain measuring bodies are arranged on each torque measuring sensor, and the torque strain measuring bodies are arranged in the same circumference and at equal intervals. Moreover, the angles of the torque strain measurement bodies in the torque measurement sensors relative to the drill collar axis direction are calibrated separately with the drill collar axis direction as the 0 degree direction. The torque strain measuring bodies with the same angles are connected in series to form bridge arms, and the bridge arms are connected to form a bridge connection circuit, and therefore, the bridge connection structure for the measurement while drilling and the torque measurement method adopt the measuring bodies on ring structures of the multiple torque measuring sensors to monitor the torque change, and the measuring accuracy is improved.