3000?Patients with obtains the relationship between gender, ageFrom table 1, cephalosporins, obtains cases for caused more than female patients with men, to explore. From the age of 18 ~ 65 years old, with the high incidence, the population ages, more the use of obtainsFrom the table, it may appear, obtains for cephalosporins caused by the time most in one were reviewedWho is the second generation for developing cephalosporin, gram-positive bacterium and gram-negative bacterium has broad-spectrum antimicrobial effect. For in vitro cephalosporins, staphylococcus aureus, to display its streptococcus, fla., neisseria and haemophilus influenzae antibacterial function and the 1st and 2nd generation cephalosporin similar. For in vitro cephalosporins, shows the staphylococcus aureus and white have stronger antibacterial action. Hemolytic streptococcus, pneumococci and streptococcus viridans produce many strains of cefazolin for Ann sensitive. Dung of streptococcus, not for cephalosporins in vitro showed to cefazolin, strong sensitivity for the gram-negative bacterium include escherichia coli, purple jasmine, fla., deformation and white clay. Other for Ann sensitive to cefazolin gram-negative bacterium include drench coccus, fla., salmonella bacteria and fungi, puluowangsi vuitton's. For Ann sensitivity of cefazolin little or no sensitive bacteria including pseudomonas aeruginosa, fla., enterbacteriaceae and weak sense of bacillus, fla., bacillus spindle's positive fungus and deformation of indoles, fla., Mr Charest gram-positive bacterium and function of cefazolin forest near, and to gram-negative bacteria, such as bloodsucking bacili, escherichia coli, crayresearch proteus mirabilis, excellent function, etc, enterbacteriaceae, folic acid, proteus indoles positive have antibacterial function. The mechanism for bacteria on the cell membrane proteins (PBPs) penicillin, ZhuanTaiMei acylation, restrain bacterial cell of the synthesis of influence, and cell cross connection adhesive peptide composition, make the cell division and growth is restrained, bacteria, and finally form length and 256 cases of adverse reactions from the data and Ann are allergic to the highest proportion of adverse reactions, main show is rash, itching, urticaria, erythema, fever etc allergies. When necessary, usable 300 mu g/ml concentration on the solution, prevent skin test of adverse of obtainsFor safety, reasonable and effective application of cephalosporins, use for should be strictly grasp indications and matters needing attention during use, this product to urine analyses, and renal function, if the loss should be stopped. And of aminoglycoside antibiotics combined application, it is generally thought that have synergy, but may aggravate renal damage, with a bit can affect drug effect in Ann and developing of aminoglycoside drug compatibility, when not ms taboo in one container of infants, and the game was drugged, such drugs have allergy history for patients with unfavorable use cephalosporins, intramuscular injection. Renal insufficiency should be reduced and careful.