Many patients seeking disease consultation upload their own image images to add credibility to the disease determination. However, the images uploaded by patients themselves are often too unclear or too small to determine the outcome. The following is a description of the method of medical image retrieval. First, the general notes: digital camera or cell phone camera, please use macro block, with anti-shake best to choose on the anti-shake function, try not to shake hands when pressing the shutter, X-ray film a photo can be, CT film and MRI can be taken every four small film, so as to see more clearly. Li Shengguang, Department of Rheumatology, The First Affiliated Hospital of the Chinese People’s Liberation Army General Hospital Second, X-ray sample: use a digital camera to take the whole X-ray. CT sample: every 4 small slices, so that the lesion can be seen clearly enough. MRI sample: every 4 small slices are taken once, so that the lesion can be seen clearly enough.