Twitching of the lower eyelid of the left eye means that the facial muscle has spasm and twitching, which is usually categorized as facial muscle spasm or facial muscle twitching disease. For the twitching of the lower eyelid of the right eye, there are many causes and etiologies, which need to be accurately diagnosed, and the common situations are as follows: 1, over-fatigue: excessive fatigue and lack of sleep may trigger a transient eyelid twitching; 2, excessive tension, anxiety: excessive tension, anxiety and poor mental health, which may also trigger eyelid twitching; 3, damage to the facial nerve: it may be complicated with facial neuritis or facial neural tube stenosis, which triggers facial nerve damage, resulting in eyelid and mouth twitching. 3, facial nerve damage: may be complicated by facial neuritis or facial neural tube stenosis, triggering facial nerve damage, leading to eyelid and mouth twitching symptoms of facial spasm; 4, other: such as hypocalcemia, cerebral infarction, cerebral hemorrhage sequelae, epilepsy or Parkinson’s disease, will also be manifested as eyelid twitching symptoms.