People's mental health activities are obviously related to the natural environment and weather. In hot summer, people will feel restless; When the wind blows, people's excitement will decrease; Continuous rain often gives people a feeling of depression, boredom and sadness; Beautiful weather makes people comfortable, happy and relaxed. Therefore, since ancient times, scholars often use the change of weather to describe or compare the psychological state of characters. Many scholars have also done a lot of meteorological research on psychological phenomena and mental diseases through experiments and observations.

There is a proverb in our country: "cauliflower is yellow, dementia is flourishing", which means that mental illness is easy to attack in spring. Observation and clinical data show that when winter comes and spring comes, when the low pressure center appears, people often feel overwhelmed and depressed because of the sudden drop of air pressure and the relative rise of temperature and the sultry weather. Children are easily angered, causing commotion, rage and crying; Adults will also show fidgeting and inefficiency. After the warm peak, normal people's mood fluctuates; Depression patients are particularly sensitive to warm peaks and warm air; Neurotic patients will feel irritable and insomnia before the weather changes; Psychopaths may be irritable, manic and impulsive. Schizophrenia tends to be stiff or sub-stiff when cold air passes by. This situation is often difficult to control, and it is necessary to wait for the meteorological conditions to be relatively stable, and the condition will be alleviated after the frequent seasons.

People are very sensitive to the natural environment, weather and climate, especially the elderly, frail women and children. Meteorological changes will cause people's physiological and psychological changes, but generally will not cause diseases. Only when the human body's resistance drops for some reason, it can't adapt to the weather changes or the weather changes extremely violently, which exceeds the human body's adaptability, will it lead to or induce diseases.

The colorful natural environment gives people a variety of feelings and will cause different emotional experiences. According to the different psychological effects of colors, colors can be divided into warm colors and cool colors. Warm colors, such as red, orange and yellow, give people a warm, brilliant and exciting feeling; Cool colors such as green, cyan, blue and purple give people a sense of tranquility, coldness and refinement. It is found that under normal circumstances, specific colors can cause corresponding psychological feelings and emotional experiences, and then affect the physiological state. There is a black Bailey Bridge on the Thames in London, England. Many people committed suicide by throwing themselves into the river on this bridge, not on other bridges in this area. But when the bridge was painted green, the number of suicides dropped rapidly.