Antibiotics and powder injections are suitable for the following infections caused by sensitive bacteria: 1. Upper and lower respiratory tract infections 2. Urinary tract infections including simple gonorrhea 3. Peritonitis and other intraperitoneal and pelvic infections 4. Sepsis (including typhoid fever) 5. Gynecological infections 6. Bone and joint soft tissue infection 7. Endocarditis. Since it is effective against anaerobic bacteria and stable against β-lactamase, it is particularly suitable for mixed aerobic and anaerobic infections and infections caused by bacteria that are sensitive to this product through the production of β-lactamase. It has a broad antibacterial spectrum, wider and more balanced coverage; wide distribution and long-lasting; no toxic reaction, high safety and good tolerance; precise curative effect, short treatment course, quick effect, low dose and low side effects.