To look into the effects of HACCP system implementing in corporations producing nutritional lunch for students in Beijing, the investigation was carried out in twenty such corporations in Chaoyang District from Sep 2003 to Jan. 2004. The results showed that the rate of right answer to questions on HACCP in staffs was 70.8%. The hazard analysis was incorrectly conducted and CCP inexactly determined in 10% corporations. The critical limits were erroneously established in 15% corporations and systems established to monitor the control of CCP were problematic in 20% corporations. The results also showed that actions to correct errors were not validly implemented in 20% corporations, verification procedures were not perfect or well implemented in 25% corporations and documentation concerning all procedures and records relevant to the HACCP principles and their application were not perfect in 30% corporations. It was concluded that the present situation of HACCP management can not ensure the hygiene and safety of the nutritional lunch for students. In order to make HACCP systems run effectively, the following measures should be taken: intensifying the training of managers and workers, reinforcing health inspection and management and constantly monitoring and resolving problems encountered in the running of HACCP system.