The pathogenesis of bipolar disorder is not well understood, and there is a tendency to believe that both genetic and environmental factors play an important role in its development. Many people with bipolar disorder develop the disorder after experiencing traumatic events, such as failing an exam, falling out of love, losing a job, etc., or experience a worsening of their condition or a relapse of the disorder after these life events. According to the theory of social time controller, stress can directly lead to the illness of susceptible people, which is the “external trigger”; on the other hand, a series of life events can lead to sleep disorders, eating disorders, and other disorders of sociobiological rhythms, and long-term disorders of sociobiological rhythms make the susceptible individuals in a basic dysfunction state, and this state gradually becomes the patient’s state of mind. On the other hand, a series of life events can lead to disorders of socio-biological rhythms such as sleep disorders, eating disorders, etc. Long-term disorders of socio-biological rhythms put susceptible individuals in a state of basic dysfunctions, which gradually become a trait of the patient, making the patient more susceptible to depressive or manic episodes, which is the effect of the “inner trigger.