The invention discloses an inductive control system for a tower crane. A method comprises the steps that S1, a user arm is placed among a plurality of infrared sensors, and the infrared sensors are started; S2, when the infrared sensors are started, infrared signals detected by the infrared sensors serve as the zero point; and S3, when the infrared signals detected by the infrared sensors change compared with the zero point, the tower crane is controlled according to the change. According to the inductive control system for the tower crane, through the steps, control over the tower crane is achieved, thus an operator does not enter and get out of the tower crane, falling accidents do not appear, even if the tower crane loses control, safety of the operator can also be ensured, meanwhile, a new tower crane control bin does not need to be built, and cost is low.