Abstract: To address the deficiencies in the prior art, the present invention provides a laser sensor for human body safety protection for use in a revolving door, which comprises: a laser scan range calculation section and an application analysis section. The laser scan range calculation section comprises a laser emitting device, a laser deflecting device, an optical signal receiving device, and an analyzing and processing device. Wherein, the laser emitting device emits laser signals to the laser deflecting device; the laser deflecting device deflects the laser signals by a pre-set angle and forms at least one laser scan area; the optical signal receiving device receives returned laser signals and transmits said signals to the analyzing and processing device. The analyzing and processing device comprises a trigger point distance analyzing module, which makes analysis to obtain trigger point distance information according to signals sent from the optical signal receiving device.