The invention discloses a distribution system access control method based on a component, and belongs to the technical field of computer software. The method includes the following steps: a) a user launches an access request; b) a standard delegation decision inteface obtains the user property information in the access request, reforms the user property information into a strategy decision request and then submits to a strategy decision server; c) the strategy decision server searches the existing strategy according to the strategy decision request and obtains a strategy matched with the strategy decision request; d) if the strategy decision request lacks the user property information needed by the matched strategy, then the strategy decision server transfers a property searching module for searching the needed user property information and updating the strategy decision request; e) the strategy decision server makes a decision according to the updated strategy decision request and the matched strategy; f) the standard delegation decision inteface authorizes or ignores the access request of the user according to the decision. The distribution system access control method based on a component can be used for the access control of the distribution system.