The goal of this clinical trial is to learn about companionship needs in breast cancer patients who are pathologically or cytologically diagnosed as cancer, are alive with the tumor, and have TNM clinical stage IV. The main questions it aims to answer are: 1. Patients with advanced breast cancer need family companionship 2. Analyze and study the reasons and factors that affect the physical and mental impact of effective family companionship on patients with advanced breast cancer Participants will be divided into a companion group and a non-accompaniment group. Patients in the companion group are given graded companion intervention methods. A comparison group: Researchers will compare a non-accompaniment group to see if the physical and mental impact of companionship on patients.