The utility model relates to a formwork erection machine, including pressing from both sides mould mechanism, double-mode mechanism and safety shelf, safety shelf disposed on double-mode mechanism one side, its characterized in that: pressing from both sides mould mechanism and including two hook trailing arm and first pneumatic cylinder, two hook trailing arm is connected respectively at first pneumatic cylinder both ends, double-mode mechanism includes mount, two trailing arm curb plate and second pneumatic cylinder, between the hook trailing arm disposed on two trailing arm curb plate and with trailing arm curb plate sliding connection, the mount is fixed on the ground, safety shelf bottom and mount fixed connection, and the mount left end is articulated with trailing arm curb plate left end, second pneumatic cylinder push rod head is articulated with trailing arm curb plate lower extreme, second pneumatic cylinder cylinder body is articulated with the mount, in this device, pressing from both sides mould mechanism and cliping the sleeper steel mould, double-mode mechanism uprise punching block, safety shelf prevent that the punching block from rolling, facilitate the producer to install sleeve pipe and iron seat on the punching block, raise the efficiency.