A minisize windmill electricity generator related to wind power motor and a photovoltaic lighting system that compatible with the windmill electricity generator is provided, which comprises the windmill electricity generator main body. The windmill electricity generator main body comprises at least a blade, a generator and a base mutually connected in sequence. The invention is characterized in that: the blade is configured as a spiral piece shape; a plurality of blades are connected with one another around a same center to form a spherical blade body; a plurality of blades are connected together by taking the rotor as the central axle; each blade bends as per similar spiral bending degree; a main wind receiving direction on blade surface is vertical to the rotor; all the blades join together to form a crown ball-shaped blade body; the system of the invention comprises the windmill electricity generator main body, a lamp post, a solar cell panel, a lighting lamp holder, a control box and a storage battery and a main control unit positioned in the control box. The system is characterized in that: the blade in the windmill electricity generator main body is configured with spiral piece shape; a plurality of blades are connected around a same center to form a ball-shaped blade body. Therefore, the invention has the advantages of low cost, high intensity, excellent practicality andoutstanding safety performance.