The invention discloses a telescoping construction platform and relates to the field of bridge construction. The telescoping construction platform includes a pathway, a frame body and at least one telescoping assembly. The pathway includes at least two guiding rails arranged side by side. Frame body sliding sets are arranged on the two guiding rails. The frame body includes a first supporting frame and a second supporting frame which are distributed up and down. Each telescoping assembly includes a horizontally arranged telescoping frame and a working platform arranged on the telescoping frame. A telescoping frame sliding set is arranged on the frame body. The telescoping frame can move horizontally in the direction perpendicular to the guiding rails. According to the telescoping construction platform, construction efficiency is high, the construction scope is wide, manpower and material resources are greatly saved, the operation space is large, and construction operation is advantageous.