Amyloid is an acutely reactive protein produced by the body, which is usually evident in the following diseases: 1) Acute inflammation of the body by bacteria, viruses, fungi and other pathogenic microorganisms, such as mycoplasma and chlamydia, can produce a significant increase in amyloid in the acute phase. 2) Non-infectious factors, such as the body acquired 2. Serum amyloid may also increase when non-infectious factors, such as immune tissue disease, connective tissue disease, common rheumatism, rheumatoid, systemic lupus erythematosus, dry syndrome, etc., are present. 3. For example, AIDS, massive trauma, massive hemorrhage or infectious shock can lead to increased serum amyloid.