An electric torque wrench, comprising a counter-force bracket (1), a wrench sleeve (2), a sleeve connecting member (3), a wrench control box (4), a wrench body (5) and a wrench handle (6); an auxiliary lighting mechanism is provided on the wrench body (5) in an outward extending manner, the auxiliary lighting mechanism comprises a threaded mounting hole (11) provided on one side of the wrench body (5), a universal metal shaping hose (7) for supporting a lighting device, and a lamp device for auxiliary lighting; the lamp device comprises a lamp cylinder mounting base (8), a lamp cylinder body (9) and a lamp holder (10). The wrench body (5) of the electric torque wrench is additionally provided with an LED lamp which is connected by the universal metal shaping hose (7), achieving auxiliary lighting at any angle, and ensuring that a wrench operator completes wrench operation in some operation environments where there is insufficient light.
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