Plug seedling root system cooling equipment

The invention provides plug seedling root system cooling equipment, and relates to the technical field of plant seedling raising beds, the plug seedling root system cooling equipment comprises a plug, a water absorbing and moisturizing layer and a water passing channel, the plug comprises a plurality of hole columns, planting cavities arranged in the hole columns are used for raising seedlings, at least part of the water absorbing and moisturizing layer covers the outer walls of the hole columns, and the water passing channel is used for circulating cooling water. And at least part of the water-absorbing moisture-preserving layer is immersed in the cooling water or the water-absorbing moisture-preserving layer is in contact with the cooling water. According to the plug seedling root system cooling equipment, by means of the characteristic that the specific heat capacity of water is large, heat exchange is achieved in the mode that the water absorption and moisture preservation layer covers the outer surface o