The invention provides a laser-scanning distance measuring device.The device comprises a laser transmitting-receiving device, a receiving plate, a coil, a rotating platform, a fixed platform, a transmitting plate, a top cover, a magnetic pole, a stator and a bottom shell.The laser transmitting-receiving device, the receiving plate and the magnetic poles are mounted on the rotating platform, and the transmitting plate and the stator are mounted on the fixed platform.The stator is coupled to the magnetic pole through a magnetic field generated by electromagnetic induction to form torque force so that the rotating platform can be driven to rotate.An inclined angle is formed by laser emitted out of the laser transmitting-receiving device and the horizontal plane, and the inclined angle is greater than zero degree.Compared with the prior art, according to the laser-scanning distance measuring device, the landform of each edge of a round area below a conical 360-degree scanning robot body is recorded in the moving process of a robot, and thereby the dead zone problem caused when an existing scanning radar is applied to the robot is solved.In addition, the wireless power supply and wireless full duplex data transmission modes are adopted for the laser-scanning distance measuring device, and the defect that the service life is short when a slip ring is adopted for power supply and communication or in other situations is avoided.