If inexplicably want to cry, may be the following reasons: First, more common is the problem of depression, depression as a very common mental, psychological disorders, the main performance is low mood, happy, easily tired, easily tired, patients attention, memory loss, and low self-esteem, self-blame, self-guilt, for the future pessimistic, disappointed, and even have negative thoughts. If there is a problem of depression, it is easy to inexplicably aggravate and cry. Second, it may be caused by social factors, such as high pressure, heavy economic burden, interpersonal tension, family conflicts, etc. These problems are difficult to be solved effectively in a short time, and if they are pressed on oneself for a long time, it is easy to make oneself sensitive, nervous, depressed, aggrieved, etc., and it is possible to inexplicably want to cry. Third, there may also be personality factors, such as some people are introverted, sensitive, prone to paranoia, especially care about the every move of others, there may be no reason for the problem of crying.