The utility model relates to an eat material draw -out device field, aim at providing the serial -type crab oil extraction equipment that can take out crab oil fast, its technical scheme main points are including the extraction case, be equipped with the chamber door on the extraction case, be equipped with the equipment box on the extraction case, be equipped with vacuum device in the equipment box, last intake pipe and the outlet duct of being equipped with of vacuum device, the intake pipe deviates from vacuum device one end and runs through the equipment box along extending the extractionincasement, the outlet duct deviates from vacuum device one end and runs through the equipment box, the extraction incasement is equipped with the collecting box, be equipped with conveyor between extraction case and the ground, the lateral wall of extraction case opposite face is equipped with the suction pipe. By adopting the above technical scheme, placing the crab and transporting on conveyor,vacuum device makes the extraction incasement be in negative pressure under operating condition, and the staff removes the shell after conveyor takes the crab, aims at the mouth of pipe of suction pipe to the crab of removing the shell, and the crab oil of crab is absorb to be extracted the incasement and fall into the collecting box for the speed of taking out of crab oil.