PROBLEM TO BE SOLVED: To provide a horizontal wind power generator that effectively generates power even with weak wind and can reduce noise by reducing fluid resistance to turning of a pressure receiving blade and improving wind power energy efficiency.SOLUTION: In a horizontal wind power generator 100, a pressure receiving blade 30 comprises a tabular blade 30P extending from a vertical rotation axis 21 along one side of a horizontal axis 31, and a long elliptical hollow blade 30H along the other side thereof.