The scientific setting and standardized application of morality clauses in the field of professional sports provide institutional guarantees for promoting the healthy development of professional sports. By using literature research and comparative analysis methods, the evolution and existing problems of the application of morality clauses in professional sports outside the territory were systematically sorted out. After analysis, it is believed that extraterritorial countries such as the United States, United Kingdom, and Germany have introduced morality clauses to effectively exercise their functions of behavioral regulation, risk allocation, and damage remediation, thereby preventing and regulating athletes'moral anomie behavior. However, with the expanding application scope of morality clauses, their implementing parties have become increasingly diversified, regulatory content continues to broaden, and clauses formulations grow progressively ambiguous. While achieving notable results, these developments have concurrently revealed systemic issues including disproportionate sanctions, ambiguous definitions of immorality and inadequate information protection. Based on this, it is suggested that China should play the role of different entities in promoting and supervising the application of morality clauses, clarify the behavioral boundaries regulated by morality clauses, refine sanction standards, while concurrently introducing reverse-morals clauses and clawback provisions. These multidimensional approach aims to achieve an equitable balance between maintaining sporting ethics and protecting athletes'rights.