In the proposed flow control method for abr service in atm networks , by introduction of delay factors , the cell transmission rate for abr traffic with different rtd are adjusted differently when the surplus bandwidth varies , and the rate variation amplitude for the short rtd traffic will be enlargeed while one for the long rtd traffic will be lessened , compared with erica 改进的erica算法加入时延因子，使在连接中具有不同时延的用户在剩余带宽变化时，速率的调整具有不同反应，时延大的反应较迟钝，时延小的反应较敏感。改进算法使得小时延信源能更快的适应带宽的变化，缓解了由于大时延信源速率调整的滞后而无法及时解除拥塞的现象。
