Rose in medicine refers to Rapid Field Evaluation, a clinical method for rapid analysis of specimens. Rapid field evaluation is a method to improve the diagnostic efficiency of biopsy by performing real-time cytomorphometric analysis of the specimen during fine needle aspiration or tissue biopsy operations. It can be applied in general biopsies, such as the examination of pleural fluid, ascites, pericardial fluid, cerebrospinal fluid, etc., as well as punctured tissues of the lungs, kidneys, lymph nodes, and thyroid gland. It is also utilized in various endoscopies, such as tracheoscopy, thoracoscopy, gastroscopy, enteroscopy, cystoscopy, laparoscopy, and laryngoscopy. Rapid on-site evaluation can assist in the diagnosis of fungal infectious diseases of the deep tissues, various tuberculosis, tumors, etc., and can be highly instructive for subsequent examination and treatment.