The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a pharmaceutical composition containing briracetam and a preparation method of the pharmaceutical composition. A pharmaceutical composition of the present application comprises a particle having an intra-particle phase and an extra-particle phase, the particle comprising, based on the total weight of the particle: Briracetam present in the intra-particle phase; the
diluent in the particle inner phase is
lactose monohydrate and
lactose anhydrous in a weight ratio of 1: (0.5-2); a disintegrant present in the particulate inner phase and the particulate outer phase; and a
lubricant present in the particulate outer phase. By controlling the weight ratio of the
diluent types, the defect of easy sticking is improved under the condition that an
adhesive beta-
cyclodextrin is not added, and it is guaranteed that intermediate particles are tableted smoothly and are convenient to form; besides, by controlling the particle size of the
active components and the dosage of the external phase disintegrating agent in the particles, the prepared briracetam preparation has the
dissolution rate and
bioequivalence equivalent to those of the original tablet, and the stability is superior to that of the original tablet.