The present invention includes means of using a customized coprocessor to replace a main processor to process or interact with a data processing unit in a complex scene and reducing clock frequencies of the main processor and related modules, thereby achieving low power consumption of the three-dimensional measurement chip. The present invention includes: step 1: determining a system structure of a three-dimensional measurement processing chip; step 2: classifying data processing units according to scene requirements; step 3: adding coprocessors on a system bus; step 4: designing a customized coprocessor or small data control unit; step 5: designing a semi-customized coprocessor or small data control unit; step 6: optimizing software codes and reducing a clock frequency; step 7: verifying the chip to confirm that the chip satisfies design requirements. The present invention is applicable to a plurality of integrated circuits or any internetwork system consisting of a plurality of integrated circuits.