Basketball sport has the characteristics of high intensity, long time, high density, fierce confrontation, and reasonable dietary nutrition supplement can improve the athletes' physical level, athletic ability, eliminate sports fatigue. The nutrition of basketball players mainly consists of sugar, water and electrolytes, protein, creatine and vitamins. This paper analyzes the dietary nutritional status of college basketball players. The results show that there are several problems in the players' diet: insufficient total energy intake, insufficient carbohydrate intake, excessive fat and protein intake, insufficient intake of some vitamins and minerals, unreasonable distribution of calories in three meals. In this paper, the dietary structure of Chinese college basketball players is basically consistent with the composition of balanced diet pagoda of Chinese residents. The types of food are reasonable, but the amount of food is low and the eating behavior is unreasonable. Nutrition education should be strengthened to promote the balanced diet of students.