Antibacterial drugs are not good and bad respectively, only suitable for not suitable for the difference between the condition of antibiotics there are many kinds of antibiotics, antibacterial drugs are not good and bad respectively, only suitable for not suitable for the difference between the condition of antibacterial drugs than cephalosporin level higher than the antibacterial drugs, including meropenem, imipenem, vancomycin, ticoronin, tigecycline, and so on. But in general, the cephalosporin antibiotic application is more, and cephalosporin antibiotics are also different for bacteria, the requirements are also different, there is a generation of cephalosporin, second generation cephalosporin, third generation cephalosporin and four generations of cephalosporin, the antibacterial spectrum is different. First and second generation cephalosporins, mainly for gram-positive cocci and bacilli; three and four generation cephalosporins, mainly for gram-negative bacilli, also have anti-infective effects on cocci. Therefore, if the abdominal cavity lesions, such as appendicitis or cholecystitis, generally more second-generation cephalosporins or third-generation cephalosporins for treatment, only refractory abdominal infections, only to consider the use of more the level of antibacterial drugs.