An article supporting device is detachably mounted on a sewing machine including a sewing machine body with a moving mechanism for moving an article to be sewn, thereby holding the article. The article supporting device includes a support body mounted on the sewing machine body, a support frame detachably attached to the support body while the article is held on support frame, and a pressed portion mounted on the support body to be pressed so that the support body is pressed in a direction opposed to a direction in which the support frame is detached from the support body.