The invention discloses a separated steel mould trolley for comprehensive pipe gallery construction. The separated steel mould trolley is divided into a front bearing part and a rear guide part, and comprises a supporting system, a template system, a separable early dismounting device, a power system and a hydraulic system, wherein the length of the front bearing part is equal to that of the a rear guide part, and is half of the total length of the trolley; the front bearing part comprises a sub supporting system, the power system, all the separable early dismounting device, the power system and the hydraulic system, and serves as a mould base supporting system to realize comprehensive pipe gallery body structure template construction, steel bar binding and concrete pouring; the rear guidepart only comprises part of the supporting system and power system, and mainly guarantees the stability of the trolley during a procession process after the separable early dismounting device is separated. During a construction process, after the trolley is subjected to demolding and driven into a new construction section, spatial switching is realized through the front bearing part and the rearguide part, and segmented performing of pouring and maintenance is realized through a separated trolley structural system, so that structural construction forms flowing and circulating progression, and efficient building of a box structure is realized.