The invention provides a method for applying ceiba pollen serving as vegetable dye to a natural fiber textile. The method comprises the following steps that firstly, ceiba pollen is collected; secondly, the ceiba pollen is added into extractant water, the mass percentage of the extractant water to the ceiba pollen is 5:1, the mixture is put into a drug-decocting machine to be extracted, extracting solutions obtained at the first time and the second time are mixed to be uniform, and ceiba pollen dye liquid is obtained; thirdly, the natural fiber textile subjected to desizing and boiling-off is put into the dye liquid, and after dyeing is completed, the temperature is reduced, the natural fiber textile is lifted out and extruded to be dry; fourthly, mordant dyeing is carried out on the dyed fabric, and after mordant dyeing is completed, the dyed fabric is taken out, washed cleanly and aired or stoved to be dry. The preparation method is simple in process, the extracting efficiency of effective constituents is high, the fabric is dyed, the natural plant resources are fully utilized, no chemical auxiliaries are added in the whole process, damage to the environment and harm to the human body do not exist, compatibility with the ecological environment is good, biodegradation can be achieved, the dyed fabric is safe to put on, cannot cause cancer, malformation or anaphylactic reaction and has a certain health effect, and cleaning production of the textile can be achieved conveniently.