Conglomerate reservoir in Shengli Oil Region is of large scale of reserves，but a series of development difficulties，such as reservoir complexity，unclear connectivity patterns，poor correspondence between injection and production and unknown development laws，severely restrict the effective development of such reservoirs. Taking Yong1 conglomerate reservoir in Dongxin oilfield as an example，the sedimentary types in the area were determined with integrated application of multiple sources of data，by which the sedimentary sequence was classified to make reservoir connectivity patterns clear.The studied results show that conglomeratic reservoir development is controlled by sedimentary facies of the fourth member of Shahejie Formation in the study area，and the favorable reservoirs locate in the main channel at the root of the fan and the braided channel at the middle of the fan with lithology of fine conglomerate and pebbled sandstone. Nine sedimentary sequences were divided for the conglomerate in the area through seismic and drilling data. According to reservoir inversion results，it is considered that the reservoirs developed well in the 1st-5th sedimentary sequences which are characterized by good connectivity and physical properties，and they can be the later development targets. Three connectivity patterns of effective reservoirs were classified through dynamic and geologic data，which are connectivity within facies of the same sedimentary period，vertical connectivity in different sedimentary periods and horizontal connectivity in different sedimentary periods. On this basis，injection-production well patterns for Block Yong1 were optimized. As a result，the recovery capacity of old wells have been improved greatly. For example，the production capacity of Well Yong1-55 increased from 4 t/d to12 t/d after the optimization. The conglomeratic reservoir development is guided effectively.