The invention provides a sunlight greenhouse small-scaled integrative water and fertilizer irrigation machine, which comprises a fertilizer application component, a water pipe component, an irrigation rig and a controller. The fertilizer compounding component comprises a fertilizer absorption unit and a fertilizer compounding unit. The water pipe component comprises a main water transportation pipe, a first branch pipe and a second branch pipe. The fertilizer absorption unit comprises a fertilizer absorbing machine, a filter and a hose. The fertilizer compounding unit is used for a fertilizer compounding machine. The outermost of the main water transportation pipe is provided with a water inlet pipe. The filter, a solenoid valve and a gauge are installed in order between the water inlet pipe and the fertilizer compounding machine. One end of the fertilizer compounding machine is provided with a water pump and one end of the water pump is connected with the irrigation rig. The other end of the water pump is provided with the first branch pipe and the second branch pipe. The other side of the fertilizer absorbing machine is provided with the hose while the other side of the hose is provided with the filter. The other side of the filter is provided with a fertilizer irrigation means. The irrigation machine has the advantages of simple in structure, simple in operation of water and fertilizer management. The irrigation machine is capable of irrigation water and fertilizer, thereby reducing labor intensity, saving water and fertilizer consumption and lowering production cost.