The present disclosure provides a refrigerant tank for storing a refrigerant circulating in a cooling circuit. The refrigerant tank includes a housing body and a desiccant bag. The housing body defines therein a space for storing the refrigerant. The desiccant bag houses a desiccant therein and is disposed inside the space of the housing body. The housing body includes a side surface defining an opening through which the refrigerant passes. The refrigerant tank further includes a contact preventing member that prevents the desiccant back from coming into contact with an edge of the opening.