The invention discloses a novel laser sensor. The laser sensor comprises a support, a laser, an imaging objective and a photosensitive element, wherein the laser is arranged on the support through a connecting structure, the laser emits a laser beam to the imaging objective, a laser fixing cavity is formed in the support, a cooling cavity is arranged outside the laser fixing cavity, a mounting part is arranged at the lower part of the cooling cavity, the imaging objective is arranged on the mounting part, the mounting part is connected with the laser fixing cavity through a first connector, the lower part of the mounting part is connected with a second connector, the photosensitive element is arranged on the side wall of the second connector, and the photosensitive element faces the lowerend surface of the imaging objective. The novel laser sensor can work in high-temperature dusty environments and guarantee accuracy of acquired data.