A drug carrier and a method of using the same are provided, wherein the drug carrier includes a base made of a carbon fiber which is magnetic and has a first polarity, a positioning member connected to the base, and is adapted to be positioned and move to a target location by guiding of at least an energy field, and a connector connected to the positioning member and a drug with two ends respectively, wherein the connector has a second polarity opposite to the first polarity, and is recognized by an organism and digested in the organism. The method includes the steps of: injecting the drug carrier into an organism; positioning the drug carrier to a target location within the organism by an equipment; and releasing the drug from the drug carrier by an external energy.