The invention relates to a pe optical cable jacket material production line. The production line consists of a weighing device, a plastic defoamer adding device, an automatic loading machine, a horizontal drying machine, a collecting hopper, an automatic feeding device, a granulator, a vacuum pumping device, a cooling device, a strip shaking machine, a horizontal rubber cutting machine, a cold wind conveying device and a packaging device. The weighing device, the automatic loading machine, the horizontal drying machine, the collecting hopper, the automatic feeding device, the granulator, the cooling device, the strip shaking machine, the horizontal rubber cutting machine, the cold wind conveying device and the packaging device are connected in series to compose the production line. The plastic defoamer adding device includes a pedestal, the top of the pedestal is connected to a storage tank through a prop, the top of the storage tank is connected to a feed pipe, and the bottom of the storage tank is connected to an inclined discharge pipe. Through the design of adding a plastic defoamer into the raw materials and then cooperating vacuum pumping during granulation, the production line can achieve the effect of forced extraction of all exhaust gas and small molecular substances from the raw materials, can improve the workshop environment, and does not affect the physical and mental health of employees.