The invention relates to an optical distance measuring device, particularly to an optical distance measuring camera. Light spots on the optical distance measuring camera are emitted to a measured object to calculate a trace, so that an accurate brightness threshold is obtained; a light spot moving trace is converted into central coordinate values of the object to calculate the position, and a distance value between the measured object and the camera is calculated according to an area of the light spots. The optical distance measuring device comprises a circuit board, wherein the circuit is provided with a lens; a main control chip is further arranged on a main control circuit board; a power processing circuit system is arranged on the main control circuit board, and the main control circuit board is provided with a USB interface and a wireless RF interface. The camera adopts an infrared lens, so that a trace of infrared light spots can be precisely caught to calculate the distance between the camera and the measured object; the optical distance measuring device can be directly used to anti-collision and avoiding application to a small-size aircraft, a robot, a moving small household appliance and a moving toy.