The system of non-competition in Labor Law is a system created worldwide to balance the relationship between employees and employers and maintain the order of competition. In the era of digital economy，with the rapid development of emerging industries，non-competition disputes are constantly emerging and generating many new problems. While the law should protect the rights of employees，it should also protect the rights of employers in a balanced manner. Employees may get higher pay returns when they choose a new job，so there are more hidden competition behaviors in practice. It has been a key and difficult problem in practice how to judge whether such competition behaviors violate the obligation of non-competition，and how to collect and produce evidence. In individual cases，consideration should be given to disclosure obligation of case facts by workers under the basic principle of “producing evidence by the favored”. Only in this way can we better maintain the spirit of contract between employers and employees，and embody substantial justice and procedural justice.