The utility model discloses a special watering can of clever promoter is driven to rice sterile line, it includes bottle, bottle lid and liquid pipe, the bottle lid install on the bottle and with bottle threaded connection, be provided with on the bottle lid and present a theatrical performance as the last item on a programme and the boss, be provided with the nozzle on the boss, be provided withthe recess on presenting a theatrical performance as the last item on a programme, install the flow channel pipe in the recess, the intraductal spring that is provided with of flow channel, be provided with on the spring with the compression leg pipe of flow channel pipe intercommunication, be provided with on the compression leg pipe and press the cover, liquid pipe is Y -pipe, and the one end ofliquid pipe is placed in the bottle, in addition both ends respectively with nozzle, flow channel union coupling. The utility model discloses fully solved prior art's defect, the ingenious pressure differential principle of utilizing is spout promoter in the bottle, set up simultaneously that the spacer sleeve is protected the human body and when preventing to spray promoter wind to the influenceof promoter placement, the design is simple, reasonable, has very high practical value.