The invention provides an SOQ-based flexible lever amplification vibration beam accelerometer chip, and a processing technology thereof. The SOQ-based flexible lever amplification vibration beam accelerometer chip comprises a quartz structure and a silicon-based structure, which are bonded together, wherein the quartz structure is a same plane differential quartz vibration beam chip structure composed of a quartz frame, an inertia force input end, a flexible lever, a quartz tuning fork, a flexible hinge, a mass block, a connecting rod and an etching gap; the silicon-based structure comprises asilicon-based frame and a release groove; the processing technology comprises: firstly, processing the release groove of the silicon-based structure of a silicon wafer, bonding the silicon wafer witha quartz plate, then thinning and polishing the quartz plate to fabricate the quartz structure, and finally scribing by using a scribing machine; an inertia force generated by the mass block under the influence of acceleration is transferred onto the lever by the inertia force input end for amplification, the force is concentrated by the connecting rod and is uniformly distributed to two vibration beams of the quartz tuning fork, the tension frequency of the quartz tuning fork on both sides of central symmetry is increased, the compression frequency of the other side is reduced, and the acceleration is measured by the frequency difference change; and the chip provided by the invention has the advantages of small volume, high precision, etc.