Proper dietary nutrition plays a pivotal role in achieving the best sports training effect the best athletic ability the best competition performance and maintaining the good health of athletes. As athletes coaches and sports team leaders generally have insufficient nutritional knowledge insufficient understanding of the importance of balanced diet to improve training level blindly promoting high protein diet ignoring the importance of other nutrients and the lack of relevant professionals to provide reasonable dietary and nutritional guidance to athletes which leads to unbalanced nutritional intake even weight physical fitness and athletic ability of athletes. This can lead to unbalanced nutritional intake even weight physical fitness and athletic ability which makes it difficult to improve the training level and even leads to sports injuries. The main goal of the design of digital nutrition monitoring system for athletes is to overcome the weaknesses of traditional nutrition monitoring improve the accuracy and timeliness of athletes􀆳 nutrition monitoring solve the common problems of unscientific diet and nutrition of athletes especially the dietary and nutrition problems that affect training effect and athletic ability caused by the lack of dietary and nutrition knowledge of athletes coaches and sports team managers and overcome the problems of using traditional dietary survey method for nutrition monitoring. It also overcomes the weaknesses of nutrition monitoring by traditional dietary survey methods and greatly improves the efficiency of sports team nutritionists researchers and managers.