Six strains of indoleacetic acid（IAA） producing phosphate solubilizing bacteria were screened out from the feces of domestic animals. Strain 2C had strong ability of Phosphorus-dissolving and IAA producing. The content of available phosphorus in the fermentation broth cultured for 10 days was 138.71 mg/mL, and the yield of IAA reached 20.21 mg/L at 24 hours. The growth promoting experiment of tomato was carried out by strain 2C. The results showed that the chlorophyll content of tomato leaves treated with strain 2C was 8% higher than that of the control group, the net photosynthetic rate（Pn） was 27 times higher than that of the control group, the intercellular CO₂ concentration（CO₂In） was 25% higher than that of the control group, the protein content of fruit quality was 53.5%higher than that of the control group, the hardness of fruit was 77.2% higher than that of the control group, the sugar content of fruit was 9.5% higher than that of the control group, the ammonium nitrogen in rhizosphere soil was 29.45% higher than that of the control group, the available phosphorus increased 26.28% and the available potassium increased 21.78%.