The utility model provides a time-controlled adjustable type automatic sprinkling irrigation system special for a solar greenhouse. The time-controlled adjustable type automatic sprinkling irrigation system is composed of a timing-adjustment electronic control cabinet, a motor, a speed reducer, a track, a balance arm, a sprinkling irrigation main machine, a water supply system and an electromagnetic valve water level control system. The time-controlled adjustable type automatic sprinkling irrigation system is characterized in that the a controller L1, a controller L2 and a controller L3 are arranged in the timing-adjustment electronic control cabinet, the controller L1 controls the electromagnetic valve water level control system, the controller L2 is a timing controller which can set the rotation speed of the motor in any time period, the speed reducer is driven to drag the sprinkling irrigation main machine to operate stably on the track, and the controller L3 regularly controls a water pump in the water supply system to start to operate or stop operating. According to the time-controlled adjustable type automatic sprinkling irrigation system, the track singularly operates in the east and west direction, and is connected to an arc frame of the front roof of the greenhouse in a staggered mode in the north and south direction. Water is drawn from a water pool through the water pump of the water supply system to be sent to the sprinkling irrigation main machine through a water pipe and then flows into spray heads. The water supply pipe is hung on the track through a plurality of supporting frames. The electromagnetic valve water level control system is provided with a high water level sensor and a low water level sensor in the water pool, and therefore an electromagnetic valve can automatically control opening and closing of a water valve. According to the time-controlled adjustable type automatic sprinkling irrigation system special for the solar greenhouse, the distance from crops is guaranteed through a gear adjusting rod, and the balance arm is used for maintaining stability in the south and north direction and even water spraying.