Fallen pillow may be related to incorrect sleeping posture, cold, improper pillow and so on. Sleeping posture is not good or the temperature difference of the neck muscles in the cold and other reasons, resulting in the original elasticity of the normal muscles will become stiff, spasm, can not cope well with the external adverse stimuli, thus the phenomenon of falling pillow. It is also possible that the pillow used when sleeping is not suitable, such as too high, too low when sleeping on the side or too hard, unequal, so that the head and neck are in a state of excessive flexion and extension, resulting in muscle tension on one side, cervical spine muscles and joints are damaged, and pillow fall occurs. Fallen pillow can be relieved after resting when it is not serious, when serious discomfort occurs, it is recommended to consult a doctor in time, follow the doctor’s instructions to carry out relevant examinations, with the help of the doctor to clarify the cause, and targeted treatment or therapy.