The main performance of low female immunity is easy to catch a cold, depression, fatigue, loss of appetite, sleep disorders, caused by low immunity for different reasons, such as discomfort symptoms continue to not improve, it is recommended to consult a doctor to check whether caused by pathological reasons. 1, easy to catch a cold: the body immunity is lowered, for external pathogens, such as bacteria, viruses, resistance will be reduced, more prone to infections, commonly known as upper respiratory tract infections; 2, depression: mental state is one of the most direct manifestations of brain activity, if a woman sleeps enough time, usually work is not very tired, but there is still a poor mental state. Upper respiratory tract infections, is commonly known as colds; 2, mental depression: mental state is one of the most direct manifestation of brain activity, if women sleep enough time, usually work is not very tired, but still appeared the phenomenon of poor mental state, may be the body immunity performance; 3, fatigue: fatigue and fatigue phenomenon is also likely to be the result of lowered immunity; 4, loss of appetite : reduced immunity is also easy to make the gastrointestinal tract function is reduced, resulting in constipation, loss of appetite, indigestion, diarrhea and other gastrointestinal symptoms; 5, sleep disorders: sleep disorders that is, insomnia, and the human body has a close relationship with the low level of immunity. Insomnia can lead to liver function is affected, resulting in the ability to synthesize immune factors decreased, and the decline in immunity will aggravate the symptoms of insomnia, so a vicious circle, and ultimately will affect the health of the body. Women can improve their immunity through reasonable ways, such as ensuring the length and quality of sleep, supplementing a highly nutritious diet, paying attention to physical exercise, maintaining a clean environment, etc. If this is still ineffective, it is necessary to consult a doctor as soon as possible to find out the cause.