The invention discloses an intelligent projection watch strap ring. The intelligent projection watch strap ring comprises a watch strap ring, a connecting shaft, micro intelligent projection equipment, a projection lens, an infrared transmitting device, a sensor device, a watch strap through hole, a watch strap, a header, a first bearing, a projector, a shell and a second bearing; the watch strapthrough hole is arranged in the middle part of the watch strap ring; two ends of the connecting shaft are each provided with the first bearing; the intelligent projection watch strap ring can be fixedon a watch strap, a wristband or a bracelet; the inconvenient problem that a projection wristband is individually worn on a wrist can be solved; furthermore, the watch strap ring is varied in fixingform, high in flexibility and very simple to operate; the intelligent projector connected with the watch strap ring can rotate in 360 DEG in the horizontal direction, and can rotate in a degree greater than 180 DEG in the vertical direction; the direction is convenient to adjust; the watch strap ring having the intelligent projection function sleeves the watch strap of a watch; therefore, projection, check and operation of information of equipment, such as a Smartphone and an intelligent watch, can be realized; and the intelligent projection watch strap ring is greatly convenient for users.