The invention provides a polycrystalline chained multi-step texturing technology. The technology at least includes the following steps that (1) a first step of texturing is that high-concentration corrosion is performed; (2), a second step of texturing is that medium-concentration corrosion is performed; (3) a third step of texturing is that low-concentration corrosion is performed; texturing solution in each step of texturing is a mixed solution of nitric acid, hydrofluoric acid and water; the acid strength in the texturing solution used in each step is lower than that in the texturing solution used in the previous step. The polycrystalline chained multi-step texturing technology has the advantages that through the multi-step texturing mode, affected layers on silicon faces are removed and a small-size low-reflectivity textured face is prepared, so that the short-circuit current of a battery is effectively improved and efficiency of the battery is improved. According to the technology, in the process of mass production, new chemicals are not needed to be introduced, production cost is not increased, and the effect of stable mass production can be achieved through improvement of original equipment.