The utility model discloses an indirect action formula fuel oil metering device, including pressure differential such as pipeline conveying system, high temperature modification oval gear flowmeter system, equivalent valve measurement system and indirect door control system alive, pressure differential such as high temperature modification oval gear flowmeter system, equivalent valve measurement system and indirect door control system alive connect through pipeline conveying system, pipeline conveying system includes a pipe, no. Two pipes, no. Three pipes, no. Four pipes, no. Five pipes, no. Six pipes, no. Seven pipes, no. Eight pipes, no. Nine pipes, no. Ten pipes, ride on bus no. 11 pipe, ten no. Two pipes, ten no. Three pipes, ten no. Four pipes, ten no. Five pipes, ten no. Six pipes, ten no. Seven pipes, ten no. Eight pipes and ten no. Nine pipes. The utility model discloses simple structure, the aperture stroke is little, reduces steady state error effectively, is the indirect action formula fuel oil metering device that the reliability is high, in addition, adopt high temperature modification oval gear flowmeter system, the precision of control is high, receives outside influencing factor little.