Left eye bags jumping may be a normal physiological phenomenon, may also be due to inverted eyelashes, eye inflammation stimulation and other pathological reasons. 1. Physiological factors: physiological bags under the eyes jumping is mainly due to lack of sleep, excessive use of the eyes, etc., because of the temporary lack of blood flow, so that the local nerve conduction imbalance, leading to the patient’s eye muscle contraction, triggered by bags under the eyes jumping. Generally improve the sleep or appropriate rest can be normalized, do not need special treatment. 2. Pathological factors (1) Inverted eyelashes: inverted eyelashes patients because of the abnormal growth direction of the eyelashes to stimulate the eye surface tissue, the patient may appear in the eye muscles involuntary spasm, twitching, which is manifested in the eye bags jumping, with the development of the disease, there may also be difficulty in opening the eyes, eye pain and other uncomfortable symptoms. (2) Inflammatory stimulation: Conjunctivitis, keratitis and other ocular inflammatory diseases patients, under the stimulation of inflammation, there can be local eyelid muscle tension, spasm, triggering the left eye bags jumping. It is recommended that patients with persistent throbbing bags under the left eye should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.