Spinocerebellar ataxia, the average age of onset is 30 to 40 years old, insidious onset, slow progression, there are also childhood and 70 years of age onset of the disease, the main symptoms manifested as ataxia, there is no effective treatment. 1. Spinocerebellar ataxia is an autosomal dominantly inherited neurological disease, the age of onset can be as young as 5 years old, or 70 years old or older, with an average age of onset of 30 to 40 years old, and its onset and clinical features are highly heterogeneous. 2. Spinocerebellar ataxia usually starts with lower limb ataxia, which manifests as wobbly walking, wide step base, easy to fall down, followed by clumsiness of hands and intentional tremor, poor distance recognition, upper limb ataxia and dysarthria are also early symptoms. Currently, there is no specific drug treatment for this disease, and clinical symptomatic treatment and rehabilitation are the mainstay. It is recommended that patients should seek prompt medical attention if they feel unwell, and early medical intervention under the guidance of a physician in order to maximize the quality of life and prolong the life span.