BACKGROUND AND OBJECTIVE: Respiratory muscle training is a widely used method in clinical diagnosis and medical treatment. Due to the fact that the respiratory muscles are located in the core area that supports the human body. Therefore, understanding how to train the core muscle group in the correct way is of great significance in improving physical fitness and reducing the occurrence of sports injuries. METHODS: This article reviews the effects of respirator breathing and vomiting training (RBVT) and dynamic core training on respiratory muscle strength and related physiological mechanisms. RESULTS: Both acute and long-term RBVT can promote respiratory muscle function, thereby reducing or delaying the degree of respiratory muscle fatigue, and helping to accelerate the clearance of lactate after exercise. The intra-abdominal pressure generated by dynamic core resistance training can stimulate the diaphragm, reduce discomfort caused by professional equipment training, improve respiratory muscle function, and enhance athletic performance. Low intensity core training may improve the central nervous system's control of muscle coordination, thus benefiting from increased movement efficiency, while high-intensity core training may increase the strength of core muscle groups, thus benefiting athletes' athletic performance. CONCLUSION: RBVT is not suitable for training the diaphragm, But dynamic core training can reduce discomfort caused by specialized equipment training. It can be used for rehabilitation, improve respiratory muscle function, and enhance exercise performance. However, the optimal diaphragm pressure generated by the transverse abdominal muscle and internal oblique muscle is a topic worthy of further research.