1. An apparatus for reinspecting a prescription drug, the apparatus comprising: a drug pack information transceiving module to receive primary inspection data according to a prescription information and a defect state of the prescription drug; a drug reinspection controlling module connected to the drug pack information transceiving module to control a procedure of reinspecting a defect state of a drug pack which has been primarily determined as a defective drug pack; an image processing module connected to the drug reinspection controlling module to photograph the drug pack, which has been primarily determined as the defective drug pack, and to process an image of the drug pack; and a defect analyzing module connected to the drug reinspection controlling module to determine a defect state of a drug by analyzing the drug contained in the image of the drug pack provided from the image processing module.