The invention discloses an intelligent obstacle avoidance tower crane comprising a tower crane body. The tower crane body comprises a vertically arranged tower crane tower frame and a suspension arm perpendicular to the tower crane tower frame. The suspension arm comprises a cargo boom, a balance arm, a cargo hoisting mechanism arranged below the cargo boom, a counterweight bin below the balance arm, a rotary mechanism located at the intersection of the suspension arm and the tower crane tower frame, and a command bin located on the rotary mechanism. The cargo boom is further provided with a distance measuring sensor for measuring the distance to generate the obstacle elevation, and a photography sensor for taking a photo to generate an obstacle planar graph. The cargo hoisting mechanism reaches the hoisting point from the current position, in the two moving processes that the weights are hoisted from the hoisting point to the target drop point, whether an obstacle exists on the traveling path of the cargo hoisting mechanism is judged, an obstacle avoidance procedure is started, and obstacle avoidance is conducted. The intelligent obstacle avoidance tower crane is high in intelligent level, obstacle interference is avoided, data are accurate, digital management and monitoring are integrated, and thus the tower crane is more stable when working.