Laser detection system

The invention discloses a laser detection system comprising a laser output device of which the output end optical fiber is provided with a first light leak spot; a light driving device which is used for driving the laser output device to emit output laser through the output end optical fiber; a first detection member which is provided with a first detection space, a first hole, a second hole and a first detection hole, wherein the output end optical fiber penetrates through the first hole, the first detection space and the second hole in turn, and the first light leak spot is arranged in the first detection space; a first photoelectric detection device which receives partial output laser leaking out of the first light leak spot and converting partial output laser into first electric signals; a first analog-to-digital conversion device which is used for converting the first electric signals into first digital signals; and a processing device which calculates the power of output laser outputted by the laser output device according to the first digital signals. With application of the mode, the actual power of output laser outputted by the laser output device can be detected in the normal use process of the laser output device.