The invention discloses an elastic swing exerciser, belonging to the field of fitness equipment for sports. A railing frame (1) is installed over a supporting column of a bracket (2). One end of a spring (3) is installed in the middle position of the bracket (2) while the other end of the spring is connected with a swing plate (4) in one body. The lower part of the bracket (2) is fixed over a base (5). The elastic swing exerciser disclosed by the invention has the advantages of a simple structure, a small volume, convenience in transport without being limited by sites or time, easy operation and wide application. The elastic swing exerciser is indispensable fitness equipment for schools and families.