The invention discloses a dismounting and mounting device for an energy storage spring in a 10kv switch. The device comprises a ratchet wrench, one side of the ratchet wrench is connected with a telescopic fixed metal connecting rod, the other side of the telescopic fixed metal connecting rod is provided with an energy storage spring fixing portion white steel plate, and the outer side of the ratchet wrench is connected with a steering adjusting handle. The dismounting and mounting device is small in size and convenient to carry, the size can be perfectly matched with the diameter of the energy storage spring, falling in the operation process is avoided, and compared with a conventional dismounting method, the device saves more manpower and material resources, does not damage an energy storage spring body in the replacing process, is high in clamping force, cannot loosen and can be freely adjusted and steered according to needs of a worker. The dismounting and mounting device is high in practicability, and convenient to use and popularize. The actual application value is wide in prospect, the use method is easy and convenient, too much professional technical needs are not needed, actual operation can be achieved through the simple and safe demonstration, manufacturing cost is low, and the later-period maintaining is easy and convenient.