A voice recognition device provided with a processor configured to determine a breathing period immediately before uttering which is a period in which a lip of a target person has moved with breathing immediately before uttering based on a captured image of the lip of the target person, to detect a voice period which is a period in which the target person is uttering without including the breathing period immediately before uttering determined above based on the captured image of the lip of the target person captured, to acquire a voice of the target person, and to recognize the voice of the target person based on the voice of the target person acquired above within the voice period detected above.