Abstract: The depth interpretation method of coal beds using the synthetic seismic parameter has been introduced in this paper. Using this method, seismic data of in Pansan, Huainan, Anhui have been reprocessed, multiple seismic parameters of T₅ Reflection corresponding to 13^-1 coal bed have been extracted, and then some effective ones have been synthesized and depth of coal beds interpreted quantitatively Finally,the depth contour of 13^-1 coal bed has been given, and its interpretation precision is verified through mining materials.