The present application provides a liquid absorbing cotton, a method for preparing a liquid absorbing cotton, and an electronic atomization device. The liquid absorbing cotton is configured to be in an annular layered structure and includes: a first cotton body arranged at an innermost layer and a second cotton body arranged outside the first cotton body; the first cotton body is formed with through holes, and a density of the first cotton body is less than a density of the second cotton body. The diffusion and transfer effect of the liquid on the liquid absorbing cotton is good, and the liquid absorption performance is well, and is conducive to reducing the risk of leakage in the atomizer.