The invention provides a kind of coal transportation with highly effective to guard against corrosion the antifreeze, its component was: Glycol, calcium chloride, triethanolamine, with deionized water. The above coal transportation highly effective anticorrosion antifreeze preparation method includes: (1) solution configuration: The calcium chloride, joins in the deionized water, namely made has been ready to be used the fluid, (2) mixed the process: Joins the triethanolamine makes is ready to be used in the fluid, makes the reserve fluid, again glycol if in the reserve fluid, then continues to stir for a hour, causes the temperature drop to the room temperature, like this, has made the end product. The invention discloses testing many times in the foundation, screened pour point depressant, caused the antifreeze the solidification point greatly to reduce, had achieved -66deg.C, its anti- freezing temperatures has achieved -40deg.C, therefore had the fine low freezing point performance, also the stability was extremely good, has satisfied north the winter coal transportation request. After simultaneously in order to avoid pour point depressant oxidizing corrodes the freight car, but also has used the inhibitor technology, provides the long-term anticorrosion for the train freight car, has guarded against the rust function.