Lower eyelids always jump, may be related to mental overstress, may also be due to inverted eyelashes, eye inflammation, facial muscle spasm and other reasons. 1. Excessive mental tension: If the work pressure is high in the near future, which leads to a long time of mental emotion in the state of anxiety and tension, coupled with a bad night’s rest, it may cause the lower eyelids to jump all the time. 2. Inverted eyelashes: As the eyelashes grow in the direction of the eyeballs, they will form a stimulus to the eyeballs. Repeated stimulation over a long period of time is likely to cause damage to the corneal epithelium, resulting in friction and foreign body sensation in the eyes, which in turn causes the lower eyelids to jump all the time, and can be accompanied by redness of the eyes, tearing, and other symptoms. 3. Eye inflammation: common in conjunctivitis, keratitis and other diseases, under the stimulation of inflammatory factors, can lead to the lower eyelid always jumping, can also be accompanied by eye foreign body sensation, eye itching, tearing and other symptoms. 4. Facial muscle spasm: usually caused by mechanical stimulation or facial nerve compression, can lead to facial nerve paralysis, may cause the lower eyelid always jumping, can also be accompanied by facial muscle weakness, facial twitching and other symptoms. Lower eyelid always jumping, may also be caused by other reasons, if the symptoms continue to be unable to relieve, or there are other discomfort manifestations, should pay attention to, as soon as possible to seek medical treatment, diagnosis of triggers by the guidance of the doctor for treatment.