The invention relates to a method for evaluating the cost effectiveness of a wind and hydrogen combined power generation system, which is characterized by comprising the following steps: calculating the scale of the wind and hydrogen combined power generation system; calculating the cost of the wind and hydrogen combined power generation system; calculating the profit of the wind and hydrogen combined power generation system; calculating the cost effectiveness of the wind and hydrogen combined power generation system. When the method disclosed by the invention is utilized to evaluate the cost effectiveness of the wind and hydrogen combined power generation system, the effectiveness of the method for evaluation of the cost effectiveness of the wind and hydrogen combined power generation system is sufficiently reflected; the method disclosed by the invention has the advantages of high reasonability, high effectiveness, strong adaptability, high actual application value and the like.