A preparation method of regularly-bent tellurium nanowires is disclosed. By processing deionized water with a strong magnetic field, the processes deionized water and polarity thereof are greatly changed. The deionized water is different from common deionized water when used for synthesis of the nano-material. Then, under combined action of a reducing agent and a surfactant, the regular-bent tellurium nanowires which cannot be directly obtained previously are synthesized. Morphology of the tellurium nanowires is broadened. When the tellurium nanowires are used as a hard template to synthesizeother materials, morphology and performance of the corresponding materials are changed.