PROBLEM TO BE SOLVED: To provide a medicine which can be used as an analgesic agent and others.SOLUTION: A cinnamic acid amide derivative that is an active ingredient of the invention medicine shows excellent analgesic action for neuropathic pain model animals as well as nociceptive pain model animals. The invention medicine is, therefore, very useful as an active ingredient of pharmaceutical compositions such as therapeutic agents for various pain diseases with acute or chronic pain or neuropathic pain.SELECTED DRAWING: None