1. Frank communication: communicate frankly with your son and express your feelings and needs. Tell him that although you understand that he wants to be with friends, these regulars disturb you and affect your daily life.

2. Make rules: Make some rules and restrictions with your son, for example, stipulate that he can only invite friends to play at home once a week, or stipulate that friends can only stay at home for a certain period of time and cannot sleep at home.

3. Consider security issues: You and your son can discuss and find solutions to security issues that worry you. For example, they can keep in touch at night, or set some security protocols, such as not allowing friends to go out alone at night.

4. Respect your son's decision: When making rules and restrictions, you should respect your son's opinions and decisions. Discuss with him and work out a plan acceptable to both sides.

5. Build trust: Build a trust relationship with your son, let him know that you support him, but at the same time hope that he can abide by the rules and restrictions.

In a word, keeping frank communication with my son and establishing a good trust relationship are the key to solve this problem.