Extraction method of pumpkin seed meal protein

The invention provides an extraction method of pumpkin seed meal protein. The pumpkin seed meal protein is prepared through alkaline extraction and acid precipitation with degreased pumpkin seed meal as the raw material. Compared with an existing plant protein separation technology, purified water and acid precipitation washing are adopted in the method, so that the ash content of the pumpkin seed meal protein is greatly reduced. The ash content of the pumpkin seed meal protein prepared through the method is below 4.0%, the protein content of the product is above 95%, and the use range of the product is greatly widened.