The invention relates to a preparation system for Jing tian yuan qi green powder. The preparation system includes a powder production machine. An outlet of the powder production machine is connected to a cyclone dust remover through a pipeline. A product packaging apparatus is arranged on the outlet of the lower part of the cyclone dust remover. The upper part of the cyclone dust remover is connected to a pulse dust remover through a pipeline. A fly powder packaging apparatus is arranged on the outlet of the lower part of the pulse dust remover. The upper part of the pulse dust remover is connected to a high-pressure fan through a pipeline. The outer wall of the powder production machine is coated by a stainless steel coating material, wherein a sealed jacket is formed between the coating material and the outer wall of the powder production machine. An inlet and an outlet connecting the jacket are formed in the coating material. The inlet is communicated with a deep well through a water inlet pipeline and a water inlet control apparatus. The outlet is communicated with a seepage well through a water outlet pipeline. Low-temperature underground water in the deep wall enters the jacket to carry heat in the powder production machine away and recycle and decompose the heat underground, so that the powder production machine always works at low temperature. The Jing tian yuan qi green powder produced through the system has a bright green color, abundant nutrients, pure taste and mellow vegetable fragrance.