The invention discloses a three-dimensional morphology measurement method based on optical strip projection and reflection and a device. The device comprises a computer, a visible light projector, a CCD (Charge Coupled Device) colorful camera, a display screen, a to-be-tested diffuse reflection object fixing device and a to-be-tested mirror surface reflection object fixing device, wherein the computer is connected with the projector, the camera and the display screen; the projector and the camera are mounted on an optical platform; the display screen is fixed on a precise horizontal movement platform of the optical platform; the projector, the camera and the display screen are positioned on the same side; the camera is positioned between the projector and the display; the to-be-tested diffuse reflection object fixing device and the to-be-tested mirror surface reflection object fixing device are placed on the optical platform; acute angles are formed between the optical axis of the camera and a normal vector of a plane of the display screen and between the optical axis of the camera and the optical axis of the projector. By adopting the method, both a diffuse reflection object and amirror surface reflection object can be measured and objects of two reflection properties can be simultaneously measured, and flexible measurement and integration measurement can be achieved.