Belonging to the technical field of inorganic material preparation methods, the invention discloses a preparation method of a quartz tube, quartz plate or quartz rod. The preparation method of the quartz tube, quartz plate or quartz rod disclosed in the invention specifically includes the steps of: quartz raw ore crushing, electromagnetic roasting, water cooling, grinding, magnetic separation, static and flotation for impurity removal, microwave complexation for impurity removal, deionized water cleaning, drying, and smelting furnace treatment, thus obtaining the quartz tube, quartz plate or quartz rod. The technological process involved in the invention has reasonable structure, advanced, efficient and easily controllable impurity removal technology, and also has pertinence, high quality index and good stability. Finally, the obtained quartz tube, quartz plate or quartz rod has an SiO2 content up to 99.990-99.99990% and an impurity content of less than 10ppm.