Provided is a multi-mode laser measurement device. A first emitter in the laser measurement assembly is configured to emit a first emitted laser beam having a first wavelength to a target object, where the first emitted laser beam is reflected by the target object into a first reflected laser beam. A second emitter is configured to emit a second emitted laser beam having a second wavelength to the target object, where the second emitted laser beam is reflected by the target object into a second reflected laser beam which is different from the first wavelength. A receiving module is configured to receive a reflected laser beam, where the reflected laser beam includes the first reflected laser beam and/or the second reflected laser beam. A photosensitive element in the receiving module can detect laser light of the first wavelength and the second wavelength during operation.