Dismounting and mounting press tool of engine valve spring

The utility model discloses a dismounting and mounting press tool of an engine valve spring. Stepped holes are symmetrically formed in two sides of a plate body and comprise a lower hole and an upper hole, wherein the lower hole is coaxial with the upper hole; the diameter of the upper hole is greater than that of the lower hole; a circular bead is formed at the boundary of the upper hole and the lower hole; a hold-down bolt adjusting groove is vertically formed in the plate body; a screw hole is formed in the tail of the plate body; a thread is arranged in the screw hole; an engine valve spring seat can be buckled in the upper hole, so that the spring is prevented from injuring people by rebounding; a balance adjusting bolt can be arranged in the screw hole, and the dismounting and mounting of the spring are facilitated and the work efficiency and the work quality are improved; and the arranged hold-down bolt adjusting groove can adapt to various vehicle shapes. Therefore, the dismounting and mounting press