The Track Engineering Comprehensive Inspection Trolley adopts lightweight modular assembly technology and integrates a track geometry parameter monitoring system, a track condition inspection system, and a rail parent material flaw detection system on an electric platform. It comprehensively utilizes high-definition imaging technology, inertial reference measurement technology, structured light measurement technology, digital signal processing technology, and ultrasonic testing technology to accomplish integrated inspection of rails, tunnels, and other aspects. It is used to guide track maintenance and upkeep, ensure good track condition, and safeguard operational safety of the line.