There are many clinical diseases that require the use of antibiotics, mainly infectious diseases. There are many types of clinical infectious diseases, due to the external pathogenic bacteria caused by various organs and systems of the body of inflammatory diseases, generally need to use antibiotics for anti-infective treatment. 1. Infectious diseases of the respiratory system: bacterial infections causing rhinitis, pharyngitis, tonsillitis, bronchitis, pneumonia, etc. 2. Infectious diseases of the digestive system: such as gastritis, enteritis, appendicitis, proctitis and so on. 3. Infectious diseases of the genitourinary system: urethritis, cystitis, pyelonephritis, prostatitis, orchitis, epididymitis, seminal vesiculitis in men; vaginitis, salpingitis, pelvic inflammatory disease, endometritis in women. 4. Skin and soft tissue infections: folliculitis, boils, carbuncles, impetigo and so on. In addition, there are other parts of the infectious diseases caused by pathogenic bacteria, such as physical discomfort, you need to go to the hospital in a timely manner to check, under the guidance of the doctor to use medication.