The invention relates to a low-temperature regulating valve. Sleeves are fixedly installed in a valve body. A valve element is installed in the sleeves in a sliding manner. A spring energy storage seal ring is arranged between the outer wall of the valve element and the inner walls of the sleeves. A supporting sleeve is fixedly installed on the sleeves. A seal base is fixedly installed on the supporting sleeve. A corrugated pipe part is fixedly installed on the lower surface of the seal base and is arranged in the supporting sleeve. An upper valve deck is fixedly installed on the seal base. A seal ring is arranged between the upper valve deck and the seal base. The bottom of the upper valve deck is shaped like a barrel. A valve rod is fixedly installed on the valve element and sequentially penetrates the sleeves, the corrugated pipe part, the seal base and the upper valve deck. A valve rod seal ring is arranged between the seal base and the valve rod. A packing assembly is arranged between the upper valve deck and the valve rod. An isolation barrel part is arranged on the supporting sleeve in a sleeving manner and is fixedly connected with the valve body and the upper valve deck. By means of the low-temperature regulating valve, the sealing performance of the valve is improved, the installation space is saved, the deformation of the valve rod is very small, the sealing performance is excellent, and the service life of the valve is long.