The invention discloses a novel oil field steam injection boiler integrated feedwater treatment device. The novel oil field steam injection boiler integrated feedwater treatment device comprises a power distribution mechanism, a control mechanism, a regeneration mechanism, a softening mechanism, a machine pump mechanism, and a deoxygenation mechanism; the power distribution mechanism comprises a power distribution cabinet and an inlet-outlet line cabinet; the control mechanism is used for control all electric appliance, machine pumps, and valves in integrated feedwater treatment; the regeneration mechanism at least comprises an assay platform, a sampling tank, a salt tank, and a pollution discharge tank equipment; the softening mechanism comprises two groups of two-stage water softeners; four water softeners in the two groups of two-stage water softeners are arranged in a rhombic pattern, wherein the two water softeners arranged parallel to a skid seat direction are two first stage tanks, and the two water softeners arranged vertical to the skid seat direction are two second stage tanks; the machine pump mechanism comprises a salt pump, a raw water pump, a pollution discharge pump, a vacuum pump, a first stage booster pump, and a second stage booster pump; all the machine pumps are arranged to be horizontally opposed; a salt tank salt pump suction inlet arranged at the middle part of the salt tank, and a salt tank salt pump suction inlet arranged at the bottom of the salt tank; the deoxygenation mechanism at least comprises a deoxygenation device, a cooling water tank, and a medicine adding adjusting device.