Underground electric jack boosted by liquid pressure through cable line operation

The invention discloses an underground electric jack boosted by liquid pressure through a cable line operation (called the underground electric jack for short). An underground tool dragged by the underground electric jack can obtain dozens of tons of pulling force to finish various underground operations under the control of the underground electric jack, so that the underground operations are simplified, and the working efficiency is improved. The underground electric jack belongs to the technical field of providing power for underground operating machines and tools in oil fields.