The conventional pathology external examination technique is paraffin sectioning. First of all, the biopsy specimen should be fixed immediately after isolation (intraoperative frozen section cannot be fixed), and the time of fixation varies according to the size of the specimen. After fixation, the lesion tissue is taken, and then a series of processing is performed by dehydration machine, after paraffin embedding, the specimen is made into a paraffin section of 3-5 microns thickness, stained by hematoxylin and eosin (HE), and made into a pathological section. During this period, it needs to go through more than 40 technical steps, which takes more than 20 hours, and any improper processing will affect the quality of the section, resulting in the pathology diagnostic physician’s unclear observation of the morphology of the cells and affecting the accuracy of the pathology diagnosis results; therefore, in addition to the time limit of the section production cycle, the pathologist’s diagnosis process under the microscope completely relies on the pathologist’s professional experience, which cannot be replaced by any machine. It also takes time. Therefore, pathological examinations are different from ordinary blood tests and cannot be “immediately available”. The corresponding regulations made by the Health Planning Commission require the pathology department to issue a report within 3 to 5 working days after receiving the specimen, with delays for decalcification and difficult cases as appropriate.