A kit preparation that enables drug dose adjustment. The kit preparation includes a bag which contains an infusion solution or pure water and at least one drug enclosing part in which a drug is enclosed and which is provided with a sealing part. The drug enclosing part is connected to the bag via the sealing part； and, when the sealing part is released, the bag is communicated with the drug enclosing part and thus the drug is poured into the bag so that a dispensing work can be carried out.
