The invention discloses oily sludge dehydration processing equipment and a method thereof, and relates to the processing technology of oily sludge processing. The oily sludge dehydration processing equipment comprises a prying base, a conveying pump, a Venturi device, a feed screw, a first conditioning reaction tank, a circulation pump, an ozone ejector, a static state mixing device, an ozone strength control tank, a second conditioning reaction tank, a blower, a screw pump, a screw pressure dehydrator, an ozone device, a 2# flocculant adjusting tank and a NaOH adjusting tank. The oily sludge dehydration processing equipment is simple in technology and capable of well solving the dehydration problem of the oily sludge of an oil field, and innovatively adopts the ozone dehydration stabilization technology, medicament is not needed and no secondary pollution exists; the device adopted by the oily sludge dehydration processing equipment is a fully integrated automatic prying device, and the oily sludge dehydration processing equipment is small in ground-drilling area and high in automation degree, and the investment cost and operation cost of the oily sludge dehydration processing equipment are both lower than those of traditional processing equipment.