The invention provides a bag type energy accumulator for a large lubricating oil station. The bag type energy accumulator for the large lubricating oil station comprises a shell, an air bag component,a gas end device and an oil end device. The oil end device comprises a connection flange, a limiting plate, a positioning space ring and a hole check ring. The connection flange is fixedly connectedwith a shell. The limiting plate, the positioning space ring and the hole check ring are located inside the connection flange. The positioning space ring and the hole check ring coordinate with the connection flange to carry out axial positioning on the limiting plate. The limiting plate is used for limiting the air bag component. The bag type energy accumulator for the large lubricating oil station is relatively simple in structure and relatively convenient to install and maintain, under the situation of guaranteeing that oil flows into the energy accumulator shell according to a certain differential pressure flow, the air bag component of the energy accumulator is limited, and the occurrence that when the system oil pressure changes, the reaction of a movable limiting device is not flexible, the air bag component of the energy accumulator is damaged, and the working state of the energy accumulator is affected is avoided.