The utility model relates to a negative ion generator for a mask, which mainly comprises a body, a negative ion generating module, a switch, an air convection hole and a battery. The present invention is provided with a negative ion generating module, a switch, an air convection hole and a battery at the body. When the switch is turned on, the negative ion generating module generates negative ions and is released through the air convection hole. The power required for the negative ion generating module is provided by the battery. With the design of the creation, the creation can be placed in an attachable mask. In addition, increasing the applicability of this creation is a very practical creation.一種口罩用負離子產生器，主要係包含本體、負離子產生模組、開關、空氣對流孔及電池所組成，本創作係於本體處設有負離子產生模組、開關、空氣對流孔及電池，當使用者開啟開關時，負離子產生模組會產生負離子，並透過空氣對流孔釋放出來，其中負離子產生模組所需之電力由電池提供，藉由本創作之設計，讓本創作可置入可附加式口罩中，增加本創作之應用性，實為一極具實用性之創作。
