Triangular spray cooling equipment consists of a housing and an air supply spray system, and is characterized in that the housing consists of a left cover, a right cover, an air out baffle, an upper mounting hoop, a lower mounting hoop and an air inlet screen; and the air supply spray system consists of a cross-flow fan, a spraying rod and atomizing nozzles. A great quantity of micron droplets are generated from the spray system and form air-phase and mist-phase jet flows under action of the cross-flow fan, and the jet flows are dispersed spatially and distributed uniformly and then evaporated to absorb heat quickly. The triangular spray cooling equipment is circular, simple in structure, low in energy consumption, convenient in maintenance and capable of spraying to the surrounding, meets requirements of outdoor large-scope spray cooling by increasing spray area effectively, overcomes defects of the prior art, and is applicable to cooling of open-air square environments, large-size entertainment sites such as parks and squares, and the like.