Objective Nutrition plays an indispensable role in disease prevention,recovery,and medical improvement.The ability of medical staff to master correct nutrition knowledge plays an important role in nutritional support and education for disease recovery.This survey aims to invest the nutritional knowledge,attitudes,and dietary behaviors of medical staff in a tertia-ry hospital in Guangzhou.Methods Questionnaire surveys is conducted as a sampling survey for nutritional knowledge and be-havior in medical staff,including the mastery of nutrition knowledge,nutritional behavior habits,and others.Results Accuracy Rate of nutrition knowledge was only 49.72％in medical staff while 68％present with high enthusiasm for learning nutrition knowledge.Forty-four percent believe that the current public opinion lacks sufficient promotion of nutrition,resulting in a lack of nutrition knowledge and attention to the actual dietary situation.Conclusion Improvement of nutrition knowledge training,dieta-ry structure and lifestyle of medical staff,could promote both their physical health and their patients'health status.