To determine whether thrombolysis is successful, clinical assessment is based on two aspects: 1. improvement of neurological function, i.e. significant improvement of symptoms. The NIHSS Stroke Scale is a comprehensive assessment of the patient’s neurological function by evaluating the patient’s consciousness, facial palsy, upper and lower limb movements, ataxia, sensation, speech, etc. The higher the score, the more severe the neurological damage. The higher the score, the more severe the neurological damage. The higher the score, the more severe the neurological damage. If the score decreases by more than 4 points when assessed 24 hours after thrombolysis or reassessed after 30 days, or the score is 0-1 when reassessed at 90 days, it indicates successful thrombolysis. The modified Rankin scale and BarthelL index are biased toward the assessment of the ability of daily living and the patient’s ability to return to society, which is assessed by eating, postural transfer, going to the toilet, going up and down stairs, walking and dressing, etc. The assessment is made 90 days after thrombolysis, and the smaller the dependence of the results, the better the effect of thrombolysis. 2. It can be confirmed by imaging data, which is commonly used in cranial Doppler, that is, using ultrasound Doppler effect to study cerebral hemodynamics, as well as CT or MRI, angiography to show the condition of blood vessels, and DSA vascular three-dimensional reconstruction, etc. The revascularization and hemodynamic recovery can indicate the success of thrombolysis.