The utility model relates to an utilize photovoltaic rain water generator's intelligent drip irrigation system of big -arch shelter liquid manure integration, including the big -arch shelter, a controller, the photovoltaic board, hydraulic generator, the battery with drip irrigation the unit, the delivery port department of gutter is equipped with the inlet for stom water, hydraulic generator is installed to the below of inlet for stom water, hydraulic generator's delivery port and cistern are connected, hydraulic generator is connected with the battery, the photovoltaic board is connected with the battery, the electricity that hydraulic generator and photovoltaic board were sent out is all stored in the battery, the battery is connected with the controller, the controller is connected with the working shaft, working shaft and cistern intercommunication, the delivery port connects in parallel has a plurality of units of driping irrigation, install solenoid valve and fertilizer applicator on every pipeline of driping irrigation the unit in proper order, still be provided with the soil moisture sensor respectively at every end of driping irrigation the unit, solenoid valve and soil moisture sensor are connected with the controller respectively. The utility model has the advantages of: combine solar energy and rainwater to generate electricity, energy utilization is rateed highly, environmental protection and with low costs.