Patients with mild depression, although also experiencing symptoms such as low mood, decreased interest, reduced motivation, slow thinking, and reduced volition, may have difficulty falling asleep and frequently wake up during sleep, among other related symptoms. However, patients often retain most of their social functions, causing some disturbance to daily life and work. Through self-adjustment, standardized psychotherapy, and medication, patients often achieve good treatment outcomes. Sometimes, the symptoms of some patients are relatively mild, and they may appear normal outwardly, but their inner experience is indeed pathological. Therefore, it is still necessary to undertake standardized, systematic, and scientific treatment to achieve clinical recovery.