Abstract: Aiming at problem of unstable operation of communication network for electronic-hydraulic control system of hydraulic support, according to the characteristics of data generation of the electronic-hydraulic control system of hydraulic support in fully-mechanized coal mining face, the properties of data objects are analyzed systematically, the architecture and transmission problem of communication network for the electronic-hydraulic control system of hydraulic support are introduced, two kinds of control modes are put forward, which are master-slave and non master, design scheme of communication network system for realizing hierarchical submission of work data.The production data source of precise control work surface is put forward, extract critical data for support applications，design method for lightening heavy transmission load.Build a data buffer pool on the slave machine, resolving the blocking problem of bus communication brought by blowout type large amount data without master submission data, the master slave control mode is adopted in the upper computer, according to the location of shearer and mining technology, determine the mobile slave machine to delay the data reading range.It realizes the transparent design of communication network system for electronic-hydraulic control system of hydraulic support, on the premise of ensuring the stability and reliability of the electronic-hydraulic control system of hydraulic support, the amount of data submitted by the system is improved to the maximum.