The invention discloses a freezing temperature-controllable spray freezing tower for preparing micron-sized ice ball particles. The spray freezing tower comprises a tower body, an atomization system, a feeding system, a circulating air supplying system, a refrigeration system and a tower wall cooling and heat preserving system; an air storage chamber is formed in the top of the tower body, a freezing chamber is formed in the tower body, a material collecting chamber is formed in the bottom of the tower body, and the air storage chamber, the freezing chamber and the material collecting chamber are communicated with one another; the atomization system is communicated with the air storage chamber, the feeding system is communicated with the atomization system through a feeding pipe, the circulating air supplying system is communicated with the bottom of the freezing chamber and the refrigeration system through a circulating air return pipe and an air pipe respectively, the refrigeration system is connected with the air storage cavity and the tower wall of the tower body, and the tower wall cooling and heat preserving system is arranged on the tower wall in a wrapping mode. According to the freezing temperature-controllable spray freezing tower for preparing the micron-sized ice ball particles, the circulating air supplying system, the refrigeration system, the tower wall cooling and heat preserving system, the feeding system and the atomization system all can achieve automated control, operation is convenient, and running is easy.