The invention discloses a warning cooling helmet. The warning cooling helmet comprises a helmet body (1) and a brim (2). The warning cooling helmet is characterized in that an electric fan (3) and a switch (4) are arranged below the brim (2); the electric fan (3) is connected with the switch (4) through a lead (5); the electric fan (3) is flexibly connected with the brim (2); an included angle formed between the electric fan (3) and the brim (2) is 90 to 270 degrees; a battery (6) is fixedly arranged in the helmet body (1); the battery (6) is connected with the switch (4) through a lead; the front end in the helmet body (1) is provided with a nearly-electric alarm (7). According to the warning cooling helmet, the structure is simple, the convenient and practical effect is achieved, an automatic alarm can be given, the use is safe and reliable, the heat dissipation and cooling effect is achieved, and the wearing is comfortable.