An eyeglass frame assembly includes temple mounting portions and temple units. Each temple mounting portion has front and rear faces and an engagement hole. Each temple unit includes a temple arm and a pivot member. The temple arm has a connection portion that is inserted into the engagement hole and that is provided with a pivot hole. The pivot member is pivoted to the connection portion and is mounted on the temple mounting portion, and has a pivot pin that is pivotally inserted into the pivot hole. The pivot member resides in the engagement hole and engages the front and rear faces of the respective one of the temple mounting portions.