To determine whether thrombolysis is successful, the clinic evaluates from the following two aspects: 1. Neurological function improvement, i.e., significant improvement of symptoms. At present, the clinical assessment should be judged by the commonly used evaluation scales and indicators, such as the National Institutes of Health Stroke Scale (NIHSS), the Modified Rankin Scale and the Barthel Index, etc. The NIHSS Stroke Scale is mainly used to comprehensively evaluate the neurological function of patients by assessing patients’ consciousness, facial paralysis, upper and lower limb movement, limb ataxia, sensation, speech, etc. The higher the score, the more serious the neurological damage is. The higher the score, the more serious the neurological damage. If the score decreases by more than 4 points in 24 hours or 30 days after thrombolysis, or if the score is 0-1 in 90 days, thrombolysis is successful. Modified Rankin Scale and BarthelL Index are inclined to the assessment of daily life ability and patients’ ability to return to society, which are assessed by eating, position transfer, going to the toilet, going up and down stairs, walking, dressing, etc. The assessment is made 90 days after thrombolysis, and the smaller the dependence of the results, the better the thrombolytic effect is; 2. It can be confirmed by imaging data, and it is commonly used in cranial brain Doppler, which is the use of ultrasound Doppler effect to study the brain. It can be confirmed by imaging data, commonly used cranial Doppler, that is, the use of ultrasound Doppler effect to study cerebral hemodynamics, as well as CT or magnetic resonance, angiography to show the situation of blood vessels, as well as DSA vascular three-dimensional reconstruction, etc., and vascular recanalization and hemodynamic restoration can be suggestive of successful thrombolysis.