遗传性痉挛性共济失调又称遗传性小脑性共济失调，临床表现为共济障碍。我们对１个家系进行了调查，现报告如下：　　例１，男，３２岁，病例报告先证者。１９９３年始出现双侧下肢活动不灵，行走不稳，似醉酒状，逐渐出现言语含糊不清，双手笨拙，行走困难。其母有类似病史。 Hereditary spastic ataxia, also known as hereditary cerebellar ataxia, clinical manifestations of ataxia. We conducted a survey of a family, the report is as follows: Example 1, male, 32 years old, case report proband. The beginning of 1993, bilateral lower extremity activity is not working, unstable walking, like drunk, gradually vague language, his hands clumsy, difficult to walk. Their mother has a similar history.