The shortage of water resources has attracted more and more attention，the information hydrogeology elements in different regions is different，especially in the area of complex reservoir structure，to accurately survey groundwater occurrence is very difficult，it is necessary to reveal the multi-source information operation rules of groundwater from start，in order to achieve the desired effect survey.Aiming at this problem，using AHP and entropy theory as the theoretical basis，using the weighted arithmetic mean method to establish a comprehensive survey and analysis of groundwater model based on multi-source hydrogeological information，and the example demonstration，it has very important practical significance to realize the accurate survey of groundwater.