Just take a drop of blood to detect a drop in peripheral blood finger, can intuitively and accurately evaluate the health of the body, early detection of potential pathology, forecasting, screening and prompt serious infections, cardiovascular disease, cancer, metabolic imbalances and dirty function is impaired, such as dozens condition; it is a simple, quick health check, elderly care, drug efficacy and a good way to provide health information. The system does not rely on a drop of blood biochemical means to detect pathogens, but the pathogens directly observed without staining, convenient and simple, rapid diagnosis. It is through the detection of human red blood cells, number of platelets, leukocytes, tissue integrity, general pathologic analysis of human, viral, bacterial infections, lipid, serum changes, cancer, parasites, immune system, nutritional status, etc., for the treatment of diseases provide a favorable opportunity and reliable basis. A drop of blood collection ultramicroscopy optical, electrical, electronics, imaging and multimedia technology, and use it mainly qualitative, through highly sensitive information, the overall extraction of blood, to undertake a comprehensive general examination, overcome general checkups single purpose, narrow face inspection, complicated, poor predictability of defects, effectively minimizing missed. The system through the observation of cell morphology, detection of micro biochemical changes in the body, with only a drop of blood to the early diagnosis of 110 kinds of physiological and pathological changes in the body that may exist, a comprehensive assessment of health status and tracking observed treatment, health effects, especially for found multiple clinical and early changes in tumor microcirculation and other health risks is important.