The invention relates to a process for removing impurities from a lepidolite leaching solution. The process is completed by carrying out impurity removal on alumina twice and adjusting pH values for twice. Lithium salt precipitation products are obtained by adding additives to a lithium sulfate solution after impurity removal, and corresponding refined lithium salts can be prepared as required. The process has the advantages that the cost of impurity removal is low, by-products with high added values can be obtained, the extraction rate of lithium is high, various useful components of lepidolite ores can also be fully utilized when lithium salts are produced, and the recycling of resources is realized.