The diagnosis of multisystemic atrophy cerebellar type is based on the main symptoms and imaging tests. 1. Clinical symptoms: cerebellar ataxia symptoms, such as progressive gait and limb ataxia, starting from the lower limbs, with obvious dysarthria and nystagmus and other cerebellar ataxia; Parkinson’s syndrome symptoms, such as bradykinesia and ankylosis; symptoms of autonomic dysfunction, such as urinary frequency, urgency, and urinary retention, postural hypotension and so on. 2. Imaging examination: cranial MRI shows atrophy of the shell nucleus, cerebellar pontine peduncle, and pons; DG-PET shows hypometabolism of the shell nucleus, brainstem, or cerebellum; PECT or PET shows denervation of the nigrostriatal presynaptic dopaminergic fibers. Patients with multi-system atrophy cerebellar type are recommended to seek timely medical treatment and symptomatic treatment under the guidance of physicians.