The utility model provides a remote monitering system of transformer substation based on EMS system, including main website end and long-range transformer substation service end, characterized by: two gateway servers are drawn together to the main website hand ladle, two gateway servers through the two nets of dispatch main website respectively with long-rangely browse the terminal, IES browses terminal connection, the long-range station service end that shortens includes the two figure gateway servers of transformer substation, the EMS collection system of transformer substation is connected to the two figure gateway servers of transformer substation, the two figure gateway servers of transformer substation through the dispatch data network with two gateway server communications. The utility model discloses remote monitering system based on the EMS system has realized telemonitoring, the remote control of regulation and control to transformer substation's data, signal and picture etc. Satisfies power dispatching and transformer control integration setting, reduces the requirement of monitor message volume, reduce regulation and control personnel's information follow up work volume, improve personnel's work efficiency.