What you are asking is whether Nanjing Normal University can entrust Nanjing Suiyuan Catering Management Co., Ltd. to operate the canteen. Is it legal? Yes, it is legal. The canteen of Nanjing Normal University is operated independently by the school, which can be contracted or entrusted. Nanjing Suiyuan Catering Management Co., Ltd. is a legal catering company registered in Qinhuai District Administrative Examination and Approval Bureau of Nanjing, so it is legal for Nanjing Normal University to entrust this company to take charge of students' diet.