0.125g is equivalent to 125mg, the unit conversion between g and mg should be multiplied by 1000. generally when inputting cephalosporin, a skin test should be done first, because cephalosporin antibiotics may cause allergic reactions, before doing the skin test it is necessary to configure the skin test solution, after preparing the skin test solution inject 1 small skin mound on the inner side of the patient’s forearm, and generally observe the reaction of the skin mound after 15 minutes. If the patient has no obvious discomfort and the mound is not red and swollen, it is judged to be (-). If the skin has redness or the redness increases in scope with pseudopods around it, this is judged to be (+). (-) results before the infusion can continue, and if it is (+) results then the medication needs to be changed. Cephalosporin treatment needs to be used according to the instructions, it is possible to use 2 times in 1 day or 3 times in 1 day.