To provide a durable, simply structured, easily mass-produceable, inexpensive, and economical synthetic resin spring connecting structure, by which a plurality of synthetic resin springs can be easily, surely and quickly connected to each other at constant intervals by anyone and the mutual constant intervals between the springs can be surely maintained because it is hardly affected directly by the elastically deformed springs due to application of compressive force.

A synthetic resin spring A provided with a pair of ring-shaped bodies 1, 2, a central ring-shaped body 3, and a plurality of spring bodies 6 is formed. In the synthetic resin spring A, the plurality of spring bodies 6 are elastically deformed when compressive force is applied to the pair of ring-shaped bodies 1, 2, while a plurality of connecting bodies 5 are continuously formed in the central ring-shaped body 3. In each of the connecting bodies 5, a connecting hole 5a is bored, while a connector B provided with a plurality of insert parts B1 and made of proper synthetic resin is formed, and an insert lever 10, which can be freely inserted into the connecting hole 5a of the connecting body 5, is arranged in the insert part B1.