Abstract <p>Organic-inorganic hybrid materials show great application prospects in many fields such as sensors, intelligent switches and optoelectronics because of their adjustable structure and functional properties. An organic-inorganic hybrid one-dimensional perovskite type crystal [(CH₂)₃NH₂S]CdCl₃ ((CH₂)₃NH₂S = thiazolidinium, <b>1</b>) has been synthesized. A structural phase transition occurs at 219/209 K (cooling/heating). The structural analysis of single crystal at variable temperature shows that the kinetic change of c and the deformation of anionic framework contribute to the structural transformation. This order-disorder transition of thiazolidinium causes the dielectric state to shift between low and high dielectric states, making it a switchable dielectric material. In addition, the reversibility of the dielectric switch of the crystal under temperature stimulation was determined. Our research has promoted the research progress of novel five-membered heterocyclic organic-inorganic hybrid perovskites and provided a good platform for realizing switchable dielectric properties.</p>