Computer electronic component cooling device

The invention belongs to the technical field of heat dissipation, and relates to a computer electronic component cooling device. The computer electronic component cooling device comprises a shell, a convection fan, a metal water tank, an external water tank, an air exhaust mechanism and the like, wherein a convection fan and a dryer are arranged in the shell; the air exhaust mechanism mounted in the shell pumps away moisture generated by the fins and the permeation metal cone due to heating of the CPU unit; the forced air flow carrying a large amount of water vapor is prevented from diffusingto the periphery of the CPU unit and but is pumped to the air exhaust mechanism; therefore, the situation that computer electronic elements are irreversibly broken due to the fact that forced air flowcarrying a large amount of water vapor leaks from a traditional evaporation heat dissipation sealing channel is avoided, and the effect of protecting the computer electronic elements is achieved. Inaddition, the evaporation h