Embodiments of present invention provide a method, device and system for determining a video quality parameter based on a comment. The method comprises: obtaining a text comment of a video, processing the text comment of the video, determining a characteristic vector for representing a quality characteristic of the video, performing similarity judgment on the characteristic vector for representing a video quality characteristic and a preset characteristic vector for determining a video quality parameter, determining a similarity value of the characteristic vector for representing a video quality characteristic with the preset characteristic vector for determining a video quality parameter, and determining a video quality parameter according to the similarity value, so that a video search apparatus can rank video resources according to the video quality parameter and provide a more optimized video search result, thereby improving the search experience of a user.