This medication sachet packaging device is provided with: a medication storing and dispensing unit (11) which supplies various types of medication； a medication packaging portion (45) which uses sachet paper (S) to package the medication supplied from the medication storing and dispensing unit (11) in individual portions； a medication packaging hopper (73) which causes the individual portion of medication to fall into the sachet paper S in the medication packaging portion (45)； and a medication checking portion (5) which determines at least whether the medication is attached to the medication packaging hopper (73), on the basis of an image obtained by imaging an inner wall surface of the medication packaging hopper (73).
