The invention provides a bionic transpiration cooling self-adaptive radiator, which comprises an evaporation chamber, a liquid storage chamber, a steam circulation pipeline, a connecting pipe and a working liquid, wherein two sides of the evaporation chamber are symmetrically connected with the steam circulation pipeline, the steam circulation pipeline is connected with the two sides of the liquidstorage chamber symmetrically, the liquid storage chamber is connected with the bottom part of the evaporation chamber by means of the connecting pipe, the evaporation chamber is internally filled with filling fibers and bionic porous materials in sequence from bottom to top, the working liquid flows in the evaporation chamber, the liquid storage chamber, the steam circulation pipeline and the connecting pipe circularly, the top end of the evaporation chamber is attached with a radiating component, and the radiating component is radiated by means of the circular flow of the working liquid. The bionic transpiration cooling self-adaptive radiator is manufactured based on the transpiration cooling principle of plants, has the advantage of high radiating performance and self-adaptation without pumping power, can solve the radiating requirements of a high heat flow density surface, and is particularly suitable for radiating of electronic components with high radiating power.