The utility model discloses an adiabatic formula ethylene glycol converter of isothermal, including the upper cover, install the distributor on the upper cover, go up the tube sheet, many reaction tubes, lower tube sheet, the low head is equipped with gas collector on. Reaction gas is enterprising lower, and it has the catalyst to go up the tube sheet facial make -up, and there is the porcelain ball on this catalyst upper portion, and the reaction tube installs the catalyst inside, and the catalyst is equipped with to lower tube sheet lower part, and this catalyst lower part is supported by the porcelain ball. Shell barrel lower part lateral wall has a plurality of boiler feed water water inlets, and shell barrel upper portion lateral wall has a plurality of boiler feed water steam outlet. The utility model discloses can reduce the cost of ethylene glycol converter, improve the productivity of separate unit ethylene glycol converter, improve the catalyst loading volume of the yield and the separate unit ethylene glycol converter of ethylene glycol, the resistance that has reduced the ethylene glycol converter falls.