The invention discloses an interlocking device for a modularized spring operation mechanism. The interlocking device is characterized by comprising a right mechanism plate (9) and a left mechanism plate which are oppositely arranged, wherein a reverse L-shaped energy-storing latch (1) is arranged on the right mechanism plate (9); a first idler wheel (10) is arranged at a corner of the energy-storing latch (1); the first idler wheel (10) is penetrated through the energy-storing latch (1) and the right mechanism plate (9), and the two ends of the first idler wheel (10) are bulged; a right end lower surface of the first idler wheel (10) is in contact with a second idler wheel (11) on a flange of an interlocking crank arm (3); and the center of the interlocking crank arm (3) is connected with the center of an interlocking buckle plate (5) through a shaft (12). The interlocking device for the modularized spring operation mechanism, provided by the invention, has the advantages of simple and easy assembling, difficulty in breaking down, easiness in transferring upward force generated in a rocking process of a feed mechanism and high sensitivity.