A large number of studies have shown that the incidence of chronic functional constipation is increasing year by year, according to statistics, the incidence of constipation in adults is about 6%, and the incidence of constipation in elderly people over 65 years old is more 30%. Constipation brings great harm to the body and mind, and seriously affects the quality of life. Its harmful effects are: ① affect metabolism, accelerate intestinal aging; ② root cause of high incidence of rectal cancer; ③ induce cardiovascular disease; ④ lead to immune system decline. Biofeedback therapy, as a green therapy for constipation, uses sound or images to give direct feedback to patients on the movement status of pelvic floor muscles, so that patients can learn the correct way to control pelvic floor muscles, enhance pelvic floor proprioception, promote blood supply, restore the function of pelvic floor muscles, and thus treat constipation. The advantages are: 1) safety: no medicine, no surgery, no side effects; 2) science: standardized training template, intuitive training guidance; 3) fun: can be treated in the game; 4) non-dependence: can be repeated for a long time, to overcome drug dependence; 5) active-passive combination: active training, passive treatment, active-passive combination to awaken the good state of pelvic floor muscle.