A method for manufacturing an anti-vaginitis suppository includes: immersing a carbonaceous material in an aqueous solution containing an active ingredient salt; thermally drying the aqueous solution at 60-500° C. to attach an agglomerate of the active ingredient salt to the carbonaceous material; pyrolyzing the agglomerate at 200-1000° C. to convert into a particle of the active ingredient attached to the carbonaceous material; mixing the carbonaceous material and the particle thereon with a matrix to obtain a mixture; and solidifying the mixture to form the suppository.