The invention discloses heterotrophy denitrifying bacteria for synchronously degrading sulfide, nitrate and an organic carbon source, relating to heterotrophy denitrifying bacteria and solving the problems of high operation cost, large floor area, high once investment and poor treatment result of the traditional method for treating organic waste water containing sulfur and nitrogen, as well as the problems of long growth cycle, poor water impact resistance and low treatment capability generated when autotrophy denitrifying bacteria is adopted. The heterotrophy denitrifying bacteria for synchronously degrading the sulfide, the nitrate and the organic carbon source is a new variety of pseudomonas and is preserved in China General Microbiological Culture Collection Center (CGMCC) with the preservation address of Institute of Microbiology of Chinese Academy of Sciences (IMCAS) and the preservation number of CGMCC No.3612 on January 26th, 2010. The bacteria of the invention can be used for treating the sulfide, the nitrate and the organic carbon source synchronously, therefore, effects of reduced cost, small floor area, low investment, good treating effect, short bacteria growth cycle and good water impact resistance can be achieved.