cefaclor powder is a second-generation cephalosporin that combines the characteristics of the first-generation cephalosporins against Gram-positive bacteria and the second-generation cephalosporins against Gram-negative bacteria. Penicillin-resistant Staphylococcus aureus and Haemophilus influenzae, A and B hemolytic streptococcus, pneumococcus, and Escherichia coli have good antibacterial activity. cefaclor powder is the first-line drug for the treatment of gonorrhea. For gonococcal urethritis, the total effective rate is 94.9%, and the bacteriological elimination rate is 85.05%. For patients with mild renal insufficiency, the dosage may not be reduced. For patients with renal insufficiency or complete loss,cefaclor powder the plasma drug concentration should be measured and the dosage should be reduced. .