The causes of left eyelid twitching and throbbing are physiologic and pathologic, and the pathologic causes include trauma, facial nerve paralysis, intraocular foreign body and other diseases. 1. Physiological causes: the twitching and jumping of the left eyelid may be caused by prolonged staying up late, excessive fatigue, prolonged use of electronic devices, mental anxiety and nervousness, etc. The symptoms can be improved by adjusting the living habits, regular work and rest, avoiding staying up late, avoiding prolonged use of electronic devices, and keeping the mind relaxed. 2. Pathological causes: trauma damage to the nerves controlling eyelid movement may cause eyelid twitching; facial nerve paralysis affects the eye muscles, there will also be symptoms of blepharospasm; foreign objects in the eye may irritate the eye, causing involuntary contraction of the local muscles, which leads to eyelid twitching. If the twitching and fluttering of the left eyelid cannot be relieved by resting for a long time, it is recommended to go to the hospital to clarify the cause of the disease through examination and deal with it under the guidance of the doctor.