The invention discloses a method for extracting sea-buckthorn protein from sea-buckthorn seed meal. The method comprises: (1) getting sea-buckthorn seed meal and pulverizing the sea-buckthorn seed meal to obtain sea-buckthorn seed meal powder; (2) sieving the sea-buckthorn seed meal powder to obtain fine sea-buckthorn seed meal powder; (3) putting the fine sea-buckthorn seed meal powder into an alcohol solution, performing stirring, washing the fine sea-buckthorn seed meal powder, and collecting the washed precipitation; (4) washing the precipitation with water till the precipitation is neutral, adding water, performing fully mixing till the obtained solution is uniform, adjusting the pH of the obtained solution with a NaOH solution, performing stirring extraction, performing centrifugation or filtration, and collecting and combining the supernates; (5) adding a hydrogen peroxide solution into the supernates, performing stirring, adjusting the pH of the obtained solution with acid, performing standing, and collecting precipitation; and (6) washing the obtained precipitation till the precipitation is neutral and performing freeze drying to obtain sea-buckthorn protein. According to the method, sea-buckthorn seed meal is taken as a raw material, therefore, reuse of industrial waste is achieved. The method is low in cost, and the additional value is greatly raised. Therefore, through the method, the comprehensive utilization ratio of sea-buckthorn resources is greatly increased.