A capsule medication administration system includes: a first capsule for internal body marking a second capsule for medication a marking device which makes a marking within a living body a drug retention section which retains a drug a release device which releases the drug a detection device which detects the marking a decision device which decides whether or not a marking which has been detected by the detection device is a specified marking and a release control device which operates the release device, if it has been decided by the decision device that it is the specified marking wherein the first capsule comprises the marking device. The second capsule comprises the drug retention section and the release device.
