The present invention relates to a diet system using mastication information, comprising: a case provided in an ear of a user a vibration sensing unit which is formed in the case and specifically formed on a portion of the case, which is in close contact with the ear, and senses vibrations generated regarding the mastication of food put in the oral cavity of the user a vibration detecting unit which is formed in the case to be adjacent to the vibration sensing unit, and detects the number of times of the vibrations sensed in the vibration sensing unit a storing unit which is formed in the case to be adjacent to vibration detecting unit so as to store the number of times of the vibrations detected in vibration detecting unit and a notifying unit formed in the case to be adjacent to the storing unit so as to notify the number of times of the vibrations stored in the storing unit. Because the diet system enables checking accurately the number of times of mastication that is the action of chewing food, not only can masticatory motions be sufficiently performed to prevent overeating, but also a doctor or a trainer can present a proper control of diet to a masticating person by using the number of times of mastication. Additionally, not only is a masticating person, i.e. a user notified of the number of times of mastication of the masticating person by voice or vibration such that the masticating person can concentrate on mastication of food, but also the speed of masticatory motions of the food-masticating person can be led by music. In addition, there is also an effect that a proper number of times of mastication can be set according to the age and the sex of the masticating person, and consumed food.COPYRIGHT KIPO 2017본 발명은 저작정보를 이용한 다이어트 시스템에 관한 것으로, 사용자의 귀에 구비되는 케이스 상기 케이스에 형성되되, 상기 귀에 밀착되는 부위에 형성되고, 상기 사용자의 구강내에 투입되는 음식물의 저작에 대해 발생되는 진동을 감지하는 진동감지부 상기 진동감지부에 이웃하게 상기 케이스에 형성되고, 상기 진동감지부에서 감지한 진동의 횟수를 검출하는 횟수검출부 상기 케이스에 형성되되, 상기 횟수검출부에 이웃하게 형성되어 상기 횟수검출부에서 검출한 상기 진동의
