The invention discloses an energy storage spring operation mechanism of a low-pressure disconnecting switch. The energy storage spring operation mechanism comprises an operation shaft, a prodding part, upper and lower cheek plates and an energy storage elastic part, wherein the upper and lower cheek plates are fixed together through two upright pillars, and track grooves are correspondingly formed in the upper and lower cheek plates; the prodding part is arranged between the upper and lower cheek plates and comprises two prodding part bodies vertical to each other; the energy storage elastic part comprises an upper shaft, a lower shaft and a spring; the lower shaft is fixed between the two cheek plates and is located right below the middle points of the track grooves; the spring is fixed on the upper shaft and the lower shaft; the upper shaft simultaneously penetrates through the two track grooves and cal slide along the track grooves; baffle heads are arranged at two ends of the upper shaft, so as to prevent the upper shaft from sliding out of the track grooves; the lower baffle head is in contact with a switch contact operator; and the operation shaft is arranged right above the middle points of the track grooves, and the length of the prodding part is greater than the distance from the operation shaft to one end of each track groove. According to the energy storage spring operation mechanism, a contact is opened and closed by virtue of the elasticity of the spring, so that the action of the switch is independent of human actions.