新型青霉素是不能代替青霉素 G 使用的。青霉素G 的药源广,价廉,对敏感致病菌效果良好,可超过各种新型青霉素。虽然有的新型青霉素治疗对青霉素G 敏感细菌的感染也有较好疗效,但因“新青”主要是针对耐药金葡菌、绿脓杆菌和某些革兰氏阴性杆菌感染,况“新青”价较高,药源也不如青霉素 G 那样 New penicillin can not be used instead of penicillin G. Penicillin G wide source of medicine, cheap, effective against sensitive pathogens, can exceed a variety of new penicillins. Although some of the new penicillin treatment of penicillin G-sensitive bacterial infections have a good effect, but because of “new youth” is mainly for drug-resistant Staphylococcus aureus, Pseudomonas aeruginosa and some Gram-negative bacilli infection, "The price is higher, the drug is not as good as penicillin G