To provide a watering hose guide roller capable of preventing a watering hose from coming off from a recessed part by improving the shape of the recessed part formed on an outer periphery of a rotary body to solve the problems in a conventional watering hose guide roller that the watering hose is accelerated in the wide recessed part formed on the outer periphery of the rotary body rotatably mounted on a support, when the watering hose is pulled in a state of fitted in the recessed part, because of the wide width of the recessed part, and the hose comes off from an upper part of the recessed part, enters in the levee and damages the field crop.

This watering hose guide roller comprises a support, a rotary body rotatably mounted on an upper part of the support, an annular recessed part formed on an outer periphery of the rotary body, and a slipping-off of watering hose preventing means formed on an upper part of the annular recessed part.