A drug microcapsule, with a particle size between 20 nm and 300 nm, comprises an emulsion core and a shell.The emulsion nucleus is mainly composed of drugs.The shell covers the emulsion core and includes most pores.The pores are connected with the emulsion core and can be controlled by environmental conditions to release the emulsion core.The shell encapsulates the medicine to achieve the effect of preserving the medicine, and the medicine is not easy to deteriorate. In addition, by increasing the external temperature or ultraviolet radiation, the shell can generate the pores, so that the emulsion core can slowly release from the pores, so as to improve the time for the medicine to be used.一種藥物微膠囊，其粒徑介於20 nm至300 nm，並包含一乳狀液核及一殼層。該乳狀液核主要由藥物構成。該殼層包覆該乳狀液核，並包括多數孔隙。該等孔隙與該乳狀液核相連通，並能受環境條件控制以使該乳狀液核釋出。該殼層包裹藥物，達到保存藥物的效果，藥品較不易變質，並且，再藉由升高外界溫度或者紫外線的照射，讓該殼層產生該等孔隙，使得該乳狀液核自該等孔隙緩慢釋放，藉以提高藥物能進行作用的時間。
