Tower crane and adjusting method for trimming moment of tower crane

The invention relates to a tower crane and an adjusting method for trimming moment of the tower crane. The tower crane comprises a tower body, a rotary tower column, a crane boom, a balance arm, and a balance weight arranged on the balance arm; the adjusting method comprises the following steps: acquiring load moment of the tower crane; determining target trimming moment of the tower crane according to the load moment; determining a target position of the balance weight on the balance arm according to the target trimming moment; moving the balance weight to the target position. According to the technical scheme provided by the invention, the target trimming moment required by the tower crane is determined through acquiring load moment of the tower crane, then the balance weight is adjusted to a corresponding target position, compared with the prior art, the trimming moment of the tower crane can be adjusted timely, so that a stress state of the tower crane is improved, the service life of the tower crane is prolonged, and potential safety hazards in construction are reduced.