PROBLEM TO BE SOLVED: To provide a medicine packaging device that can accurately package a medicine.SOLUTION: A medicine packaging device 10 principally comprises: a medicine cassette 12 that houses a predetermined type of medicine a camera 24 that measures an amount of the medicine 36 dropped from the medicine cassette 12 a load cell 28 that receives the medicine 36 dropped from the medicine cassette 12 to measure its weight a packaging part 42 that encloses the medicine in medicine bags below the load cell 28 and a computer 38 that controls the operation of respective parts included in the medicine packaging device 10.