Objective To observe the influence of Zhenweifang on the muscle tension in flaccid paralysis period and prognosis of stroke.Methods One hundred and eighty patients were randomly divided into basic group,Buyanghuanwutang group and Zhenweifang group.Basic group was treated with usual medical treatment with nerve rehabitilation and acupuncture.Buyanghuanwutang group and Zhenweifang group were given the corresponding traditional Chinese medicine.Patients in Buyanghuanwutang group and Zhenweifang group stop taking the traditional Chinese medicine when their muscle tension reach the level of Ashworth Grade Ⅱ,and continued their basic treatment.The defect of neurological and daily life ability were evaluated after three-week and six-week treatment,and the prognosis was evaluated according to clinical efficacy.Results The time that patients muscle tension in Zhenweifang group need to reach Ashworth Grade Ⅱ was much shorter than that in Buyanghuanwutang group and basic group(P