A controlled releasing composition comprising a plurality of microparticles and a matrix as well as the preparation method thereof is disclosed. The plurality of microparticles comprise a first material and the matrix comprises a second material. The melting temperature of the first material is higher than the melting temperature of the second material.複数の微粒子とマトリックスとを含む制御放出組成物、およびその調製法が開示される。該複数の微粒子は第1の材料を含み、該マトリックスは第2の材料を含む。第1の材料の溶融温度は、第2の材料の溶融温度よりも高い。