When people reach old age, their physiological functions begin to decline, with changes such as loss of vision and hearing, memory loss, and slower movement. These physiological changes often lead to pessimism and disappointment, anxiety, mental discomfort, low interest in life, etc., so that the quality of life in old age is greatly reduced. To overcome psychological barriers, the elderly should master the 5 points of mental health care: First, maintain optimism and cultivate a healthy mind. Older people should be confident in life, try to be cheerful, open-minded and optimistic, try to play their advantages in knowledge, experience, skills, intelligence and strengths, and look for new pleasures in life. Second, expand the colorful living space. Older people should arrange their lives according to their physical conditions and interests, such as practicing calligraphy, learning painting, planting flowers, raising birds, reading newspapers, watching movies and TV dramas. This will not only stretch the mind, but also cherish the time, learn new knowledge, and make life more meaningful. Third, good at getting rid of worries, keep a clear mind. In the face of life’s troubles do not have to be upset, not to be in a depressed state, but through various means to release the bad mood in a timely manner. For external fame and fortune things to be good at transcendence, do not overwork the household chores, so that they keep a good mood. Fourth, pay attention to diet and nutrition, and strengthen physical exercise. A person with a healthy body can better ensure the psychological health. The elderly should usually take more high-quality protein, more vitamin-rich, low-fat food, such as lean meat, milk, eggs, soy products and lotus seeds, cinnamon, etc.. The elderly should also choose appropriate exercise programs, such as walking, jogging, boxing, doing exercises, etc., the intensity to feel comfortable. Fifth, pay attention to interpersonal relationships and psychological communication. Older people should pay attention to contact old friends, but also to make new friends, and often chat with friends, exchange ideas and feelings, so that mutual care and consideration in life, communication and exchange of ideas, in collective activities and interpersonal interaction to complement each other’s strengths and weaknesses, to draw on life nutrients, so that they are comfortable, happy life.