The invention discloses a preparation technology of spinning yarn with the micro-circulation healthcare function. The technology comprises the steps that at first, white sections are dried, and colormaster batches are dried; the dried white sections and the color master batches are mixed, and the mixture is fused; the fused mixture is spun to form a textile fabric, the textile fabric is soaked ina dye vat, heat preservation is performed to complete textile fabric ion modification, then, the obtained textile fabric is placed into the dye vat, heating is performed, and dyeing is completed. After an oil agent is added to the textile fabric, the textile fabric is placed into a steeping solution containing a finishing agent to be subjected to padding treatment, then, drying is performed, andbaking and drying treatment is performed. The spun yarn manufactured from polyester fiber can have various colors, the colors of the spun yarn all meet the requirement, the preparation method of the spun yarn is simple, low in contamination and good in coloring efficiency. The textile fabric obtained after post-treatment has the advantages of achieving micro-circulation healthcare and heat preservation, carrying negative ions, and containing no static electricity, and is uniform in dyeing and is not faded.