The invention discloses an elastic strip forming machine which comprises a one-time forming system, a feeding manipulator and an automatic centering system. The one-time forming system comprises an upper die, a lower die, an upper positioning column, a lower positioning column, a middle pushing arm, two lateral pushing arms and two limb pushing arms. The feeding manipulator comprises a grabbing mechanism, a telescoping mechanism, a rotating mechanism and a transverse moving mechanism. The automatic centering system comprises an upper connecting rod, a lower connecting rod, a rotating mechanism, a left material blocking plate, a right material blocking plate and a drive mechanism. The elastic strip forming machine has the advantages of achieving one-time forming production of elastic strips and improving the production efficiency of the elastic strips and the pass percent of products.