Immunofixation electrophoresis is the separation of various proteins from serum and is used to differentiate between types of proteins. It is commonly used as a clinical aid in the diagnosis of a variety of immune system diseases such as monoclonal immunoglobulin proliferative disease, Benzoins and free light and heavy chain disease, and polyclonal immunoglobulins. The more commonly used clinical test is the Benzo protein. A positive urine Benzo protein test is most likely to be considered in cases where the patient may have multiple myelomatosis, macroglobulinemia, renal amyloidosis, chronic pyelonephritis, systemic lupus erythematosus, etc. The above results may occur. To further clarify the corresponding disease, there are other specific tests and other characteristic clinical changes associated with this disease and continue to improve the relevant tests for further clarification.