The invention discloses a method for dynamically distributing resources during a random access process, which reduces the bumping possibility of the users and improves the utilization ratio of the resources. The method comprises the steps as follows: when bandwidth distributed by a random access channel by node B is equal to a given bandwidth and a single sequence detection method is used, if the detected bumping time exceeds the given first bumping time threshold, a dual-sequence linked detection method is used for detection; after the node B uses the dual-sequence linked detection method, if the detected bumping time is less than or equal to the given second bumping time threshold, the single-sequence detection method is used for detection.