The invention discloses an intermittent reciprocating motion control system in a watch. The intermittent reciprocating motion control system comprises a gear drive system, a command wheel and a four-bar mechanism. The gear drive system contacts the command wheel during inactive time, the gear drive system cannot drive the command wheel to work, the four-bar mechanism is in an enclosed self-locked state, and display mechanisms are static; and the gear drive system contacts the command wheel during active time, the gear drive system drives the command wheel, the command wheel drives the four-bar mechanism, and the four-bar mechanism drives the two display mechanisms to move in the same direction or in opposite directions. The beneficial effects of the intermittent reciprocating motion control system are as follows: the intermittent reciprocating motion control system in the watch is of high efficiency and low load, the influence on the output moment of the watch barrel is small, the intermittent reciprocating motion control system can be achieved on the condition of the basic movement of the existing watch, and there is no need for increase of the moment of the barrel or redesign; the watch intermittent reciprocating motion control system is simple in structure, reliable in operation and good in manufacturability; and intermittent reciprocating motion of part of the structure of the watch can be achieved with affecting normal timekeeping of the watch.