The invention discloses a trolley for an arch rib or an arch case of a transit bridge. The trolley comprises a trolley chassis and four pulleys arranged below the trolley chassis, and is characterized in that the trolley chassis comprises a transverse support and longitudinal connection beam members respectively connected below two end parts of the transverse support; the trolley chassis is in a transverse H shape as a whole; the left end part and right end part above the transverse support are respectively provided with support stand columns perpendicular to the transverse support; the upper parts of two support stand columns are respectively and fixedly connected with the upper end of an inclined support column; the lower ends of two inclined support columns are respectively and fixedly connected with one end part of the transverse support; and four pulleys are respectively arranged below two end parts of the two longitudinal connection beam members. The trolley for an arch rib or an arch case is simple in structure, convenient to operate, safe, reliable and low in cost, and has favorable social and economic benefits and great popularization value. The arch rib or arch case can be placed in the trolley, and the requirement of transiting construction can be met reliably.