The utility model relates to a net wind -guiding structure before fan, quick location can be done with the fan afterframe to preceding net wind -guiding unit, its characterized in that: extending by back one side of preceding net wind -guiding unit sets up one section interval section of encircling of predetermineeing the degree of depth, and is in one section accommodation space who is high low head, suitable tie and puts is established towards opening one side is concave to the inboard peripheral of interval ring section, with will the fan afterframe is put into accommodation space, be formed with the wind guide strip that the interval was predetermine to the multichannel on one side of the effect forward of interval ring section, and the inboard center part of leaning on of wind guide strip forms the guide section of outstanding form. Be beneficial to wind -force transmission to the farther distance with blowing.