A pushing and expanding drawing type elastic fixed connector comprises a screw head, an expanding sleeve and a tight expanding bolt; and the tight expanding bolt is installed behind an installing channel of the expanding sleeve, the screw head is connected with the connecting end of the tight expanding bolt, and therefore the tight expanding bolt can be kept in the installing channel. By means of the simple pushing and pulling action, the pushing and expanding drawing type elastic fixed connector makes a connecting object and a connected object fast and conveniently connected and separated, so that operation is convenient. The pushing and expanding drawing type elastic fixed connector is simple and compact in structure; no gap exists between connecting pieces; the sliding phenomenon is avoided after installation; the fastening force is high; machining is easy; and the pushing and expanding drawing type elastic fixed connector can be repeatedly used, and therefore the pushing and expanding drawing type elastic fixed connector has better economical performance.