The invention discloses a parallel lookup method for a high-capacity access control list, and relates to the technical field of communication. The method comprises the following steps: setting the linked list storage structure of the access control list into a bidirectional linked list way, and establishing a structural relation among list items in the access control list; performing flow division on primarily entering data flow by using a multi-core processor to establish a flow table, and meanwhile, looking up an appropriate access control list item to establish correlation between the flow table and the list item of the access control list; acquiring the execution action of the access control list from the table items of the flow table by using subsequently entering data flow. By adopting the parallel lookup method, the matching efficiency of the access control list is increased, the technical bottleneck of the multi-core processor on the function item of the access control list is eliminated, and the resource utilization ratio and the task execution efficiency are increased.