To evaluate the food hygiene situation and influencing factors in risk and credit degree of school and kindergarten collective dining rooms in Zhuhai,define the frequency and focal items of supervision,and probe into new supervising modes,235 dining rooms in the kindergartens and schools in Zhuhai were graded from Feb.2003. The result is that 46.8% of them were in grade B,30.6% were in grade C,17.9% were in grade A,and 4.7% were in grade D. The food hygiene situations of dining rooms in kindergartens and primary schools were generally poor than those in middle schools and colleges,and the important influencing factors were the preventive hygienic supervision and hygienic management consciousness of leaders. Pursuing graded management of food hygiene is an effective measure to raise the food hygiene level of school and kindergarten dining rooms. Further suggestions to improve the hygiene situation in collective dining rooms were made.