A distance detection device, comprising: A light source configured to emit pulse light beams sequentially; a scanning module including a first optical module including at least two light-transmitting prisms, and the at least two light-transmitting prisms including a first light-transmitting prism and a second light-transmitting prism, a second optical module, and drivers, wherein the first optical module and the second optical module are sequentially positioned on an optical path of the light beams emitted by the light source, the drivers are configured to drive the first optical module and the second optical module to move to sequentially project the light beams emitted by the light source to different directions and form a strip-shaped scanning range after being emitted from the scanning module; wherein the distance detection device is characterized in that the second optical module includes one of at least two light-transmitting prisms, and the at least two light-transmitting prisms include a third light-transmitting prism and a fourth light-transmitting prism, or a rotating polygon mirror, different emitting surfaces of the rotating polygon mirror being sequentially positioned on an exit light path of the first optical module or a rotating reflective mirror, the rotating reflective mirror being positioned on an exit light path of the first optical module for reflecting the light beam from the first optical module, wherein a rotational axis of the rotating reflecting mirror and a rotating axis of the first and second light-transmitting prisms are parallel. a scanning module including a first optical module including at least two light-transmitting prisms, and the at least two light-transmitting prisms including a first light-transmitting prism and a second light-transmitting prism, a second optical module, and drivers, wherein a first optical module including at least two light-transmitting prisms, and the at least two light-transmitting prisms including a first light-transmitting prism and a second light-transmitting prism, a second optical module, and drivers, wherein the first optical module and the second optical module are sequentially positioned on an optical path of the light beams emitted by the light source, the drivers are configured to drive the first optical module and the second optical module to move to sequentially project the light beams emitted by the light source to different directions and form a strip-shaped scanning range after being emitted from the scanning module; at least two light-transmitting prisms, and the at least two light-transmitting prisms include a third light-transmitting prism and a fourth light-transmitting prism, or a rotating polygon mirror, different emitting surfaces of the rotating polygon mirror being sequentially positioned on an exit light path of the first optical module or a rotating reflective mirror, the rotating reflective mirror being positioned on an exit light path of the first optical module for reflecting the light beam from the first optical module, wherein a rotational axis of the rotating reflecting mirror and a rotating axis of the first and second light-transmitting prisms are parallel.