PROBLEM TO BE SOLVED: To provide a chewing recognition device that is mounted in an external ear of a human, and detects deformation of an ear canal with chewing and recognizes a chewing action, and to provide a chewing recognition method and a program for chewing recognition.SOLUTION: A chewing recognition device includes a sensor unit mounted to an external ear and detecting the shape change, and a recognition unit for recognizing chewing based on a detection signal. The recognition unit includes: detection signal input means； reference value setting means； comparison value setting means for obtaining a plurality of comparison values measured a first reference number of times after a reference value is set and continuing to this； comparison means for comparing the comparison value with the reference value and obtaining electric potential difference signals； first determination means for determining whether or not the number of the electric potential difference signals of a predetermined electric potential difference or more exists the second reference number of times or more among the electric potential difference signals； second determination means for determining whether or not the number of times determined that the number of the electric potential difference signals of the predetermined electric potential difference or more exists the second reference number of times or more among the potential signals exists the fourth reference number of times or more in the third reference number of times； and chewing recognition means.
