Disclosed herein is an active pellet. The active pellet includes a main body and spaces. The main body includes active ingredient in a range of 50 to 100wt%, free of chemical additives.在此揭露一種活性微粒。此活性微粒包含有主體及數個空隙。主體不包含化學添加劑,且包含50至100 wt%的活性成分。100‧‧‧活性微粒110‧‧‧主體112‧‧‧細粉體114‧‧‧液體120‧‧‧蜂巢狀孔洞130‧‧‧包覆層D1‧‧‧蜂巢狀孔洞的寬度