The invention provides a strain of low-temperature resistant phosphate solubilizing bacteria for converting insoluble phosphate into soluble phosphate. The method comprises the following steps: enrichment and separation of low-temperature resistant phosphate solubilizing bacteria; screening and purification; detection of phosphate solubilizing ability; and strain identification. In the method, theinsoluble phosphate can be converted into soluble phosphate in a low-temperature condition (15 DEG C), thus the use of phosphate fertilizer is reduced, and soil hardening is relieved.