The invention relates to a conference personnel detection method and system and a computer storage medium. The conference personnel detection method comprises the steps of obtaining the information of conference participants, specifically, obtaining a personnel information library of the conference participants from an existing face library according to conference invitation information, wherein the personnel information library at least comprises names, facial features and anti-counterfeiting marks of conference participants; detecting the conference participants, specifically, performing face acquisition on each conference participants through an image acquisition device to obtain a face image, and judging whether the face image exists in the personnel information library or not through a face recognition technology according to the face image; and judging whether the source of the face image is a real person or not through an anti-counterfeiting identification technology, if the two kinds of identification pass, allowing the participant to enter, otherwise, refusing to enter the conference and notifying a manager. Conference entrance detection is carried out through the face recognition technology and the face anti-counterfeiting technology, and the situation that a face model serves as a face and misrecognition occurs is prevented.