The main design concept of infrared automatic toothpaste is to facilitate the use of older and younger persons, whose joints are not flexible enough or have palms that are weak. The use of infrared feature allows the machine to automatically help the user to get the right amount of toothpaste. Therefore, users do not have to use much energy. In conclusion, this invention not only can save the amount of toothpaste but also can keep the washstand clean, thus to achieve both practical and economic effects.