The invention provides an elastic force type anti-reversion structure, relating to the technical field of starting handles of internal-combustion engines. A pressure spring is arranged in an inner hole of a start shaft; start stress surfaces of the start shaft and a start pin are rectilinear. When an internal-combustion engine is started by using a handle, the pressure spring is butted with a little force, the handle and the start pin are in an overrunning clutch fit. When the internal-combustion engine is started normally, the handle is pushed out by the start shaft; if start reversion is generated, the butting force from a human to the pressure spring disappears naturally, and the handle is sprung by the pressure spring so that an incident caused by handle reversion is avoided.