The present invention provides a belt connecting device which can be applied to various uses, has an excellent design property, and can be safely and easily operated even by elderly people and infants. The belt connecting device comprises a belt connecting member fixed to one portion of an article and a belt including one end portion fixed to another portion of the article. A female surface fastener is sewn on the other end portion of the belt to constitute an engaging portion to be engaged with the belt connecting member. The belt connecting member has at one end thereof an inserting hole through and to which the portion of the article is inserted and fixed, at the other end an engaged portion of a male surface fastener and with which the engaging portion of the belt detachably engages, and between the inserting hole and the engaged portion a belt threading portion comprising an elongated hole which is slightly longer than a width of the belt.