The jumping of the lower eyelid of the left eye may be caused with overuse of the eyes, facial muscle spasm and other reasons. 1. Excessive use of the eyes: When using electronic products frequently, one may use the eyes excessively, and the symptom of throbbing eyelid under the left eye will appear. 2. Facial muscle spasm: Twitching usually occurs intermittently, cannot be controlled by one’s consciousness, and is not regular. The twitching can start from the eyelids and gradually develop to the cheeks and corners of the mouth. Left eye lower eyelid jumping people, if the rest can not be relieved, need to go to the regular hospital in time, clear cause, follow the doctor’s instructions for standardized treatment, so as not to delay the condition of the body to bring adverse effects.