The cold wind is bitterly cold, the grass and trees are withering, and the landscape is depressed. Along with the arrival of winter, some people may become depressed and dreary, lose interest, fatigue or energy, drowsiness, loss of appetite or gluttony, and inability to concentrate, as if they were a different person compared to the past. Once spring returns and everything is revived, these symptoms will gradually disappear and their mood and energy will return to normal. This phenomenon is called “seasonal depressive disorder”, which is characterized by depression related to a specific season (especially winter). Seasonal depressive disorder occurs mainly due to the disruption of the body’s biological rhythm and endocrine disorders caused by the shortening of sunlight hours in winter, resulting in mood disorders. In addition to biological factors caused by seasons, psychosocial factors are also one of the causes that cannot be ignored, such as work stress, employment and schooling pressure, marital crisis, and interpersonal tension. If negative emotions are not ventilated and channeled in a timely manner during these negative life events, the onset of the disease will be accelerated. There is a sudden increase in the number of depression patients coming to the counseling clinic every winter, which is a typical sign of seasonal depression entering its high season. Both men and women can suffer from seasonal depression, but the prevalence is higher in women. What should I do if I experience these symptoms of depression in winter? If there are only some temporary and mild symptoms of depression or fatigue, you can try the following ways to adjust your mood: 1. Go to fresh air and sunny places for outdoor activities and increase sunlight exposure; usually at home, you should also keep indoor air circulation and sufficient light; 4.Increase physical exercise, such as fitness exercises. 5, enjoy music, is a way to change the mood with the help of music. First of all, choose the music that suits your mood at that time, which is the first step to calm your worries, and then gradually change to the music you want to mood, that is, bright and lively music. 6, looking for other things that interest you, such as reading, painting, etc.. But if your bad mood does last more than 2 weeks, whether or not it is related to the season, it is best to go to a psychiatric hospital as soon as possible to seek professional counseling and treatment to help you get out of the psychological shadow as soon as possible and return to normal life.