The embodiment of the invention discloses a method, device and electronic equipment for scanning a vulnerability based on a webpage hash value. The method comprises the following steps: acquiring a uniform resource locator of a webpage, and converting the acquired uniform resource locator of the webpage according to a preset case format, then obtaining a converted uniform resource locator; extracting a request parameter in the converted uniform resource locator, reconstructing the converted uniform resource locator according to a preset request parameter ranked set, and obtaining a reconstructed uniform resource locator; performing mask processing on a request parameter value of the request parameter in the constructed uniform resource locator, and obtaining a masked uniform resource locator; and performing hash computation on the masked uniform resource locator, obtaining a masked uniform resource locator hash value, and performing webpage vulnerability detection according to the masked uniform resource locator hash value and a pre-stored webpage hash value table. By applying the method, device and electronic equipment for scanning the vulnerability based on the webpage hash value provided by the invention, the vulnerability scanning efficiency can be improved.