The utility model discloses an engine diesel particulate filter (DPF) controllable regeneration system. The engine DPF controllable regeneration system comprises a DPF passive regeneration system and a controllable initiative regeneration system. The DPF passive regeneration system comprises a diesel oxidation catalyst (DOC), a DPF, a DPF exit pressure sensor and a DOC entry pressure sensor, wherein the DOC and the DPF are arranged on an engine exhaust system pipeline, the DPF exit pressure sensor is arranged on an exit of the DPF, and the DOC entry pressure sensor is arranged on an entry of the DOC. Output ends of the DPF exit pressure sensor and the DOC entry pressure sensor are respectively connected to an electronic control unit (ECU). The controllable initiative regeneration system comprises a combustor, an oil atomizer of the combustor and an oil pump. The combustor is arranged on the engine exhaust system pipeline and located on the exhaust upstream of the DOC. The oil atomizer of the combustor is arranged on the engine exhaust system pipeline, located on the exhaust upstream of the combustor, and connected with the oil pump through an oil line. Due to the fact that the controllable regeneration system is arranged on the base of an existing DPF passive regeneration system, regeneration reliability and usage universality can be guaranteed, and regeneration cost is reduced at the same time.