A manufacturing method of a fully waterproofed and semi-rigid pipeline-laid optical cable, the manufacturing method comprising: (a), producing a sheath layer, subjecting a pay-off rack for optical fiber to a tension test, a tension of the rack being adjusted to 0.8N-1N, then, selecting a die for extrusion molding of the sheath layer, an output diameter of the die being adjusted to 0.8±0.05mm, and a degree of vacuum in the die being adjusted for a peeling strength at 5.0-7.0N; (b), producing a first water blocking layer, configuring a high modulus water-blocking aramid as a water blocking material of the first water blocking layer, forming a first cord by one or more of fastening yarn and polyester yarn, the first cord is positioned in the first water blocking layer; (c), producing an inner protective layer, unwinding an optical fiber with the sheath layer made in the step (a) by a tight tube optical fiber pay-off rack, wherein a tension of the tight tube optical fiber pay-off rack is adjusted to 3.0-5.0N, an extrusion die, preferably a tubular extrusion die, molds the inner protective layer at the outside of the first water blocking layer, a temperature for extruding is set, and the temperature is controlled at 130-170 °C, after extruding, the optical fiber which is coated with the inner protective layer passes through a hot water tank and then a cold water tank for cooling, and the optical fiber is gathered on a reel by a traction wheel to form a cable unit; (d), producing a second water blocking layer, selecting a high modulus aramid and a water blocking yarn as materials for making the second water blocking layer, wherein a second cord is formed from one or more of fastening yarn and polyester yarn, the second cord is positioned in the second water blocking layer; a tension of an aramid pay-off rack is kept to be close to a tension of the water blocking yarn, deviation does not exceed 0.5%, the aramid and the water blocking yarn are twisted into an "S" form at a pitch of 800-1000mm to form the second water blocking layer, the second cord is placed straight at one side of the aramid; (e), producing an outer protective layer, extruding, by an extrusion mold, an outer protective material at the outside of the cable unit covering the second water blocking layer to from the outer protective layer, wherein the cable covered with the outer protective layer then passes through a hot water tank and a cold water tank for cooling, and the processed cable, as the fully waterproofed and semi-rigid pipeline-laid optical cable, is pulled onto a reel by a traction wheel. (a), producing a sheath layer, subjecting a pay-off rack for optical fiber to a tension test, a tension of the rack being adjusted to 0.8N-1N, then, selecting a die for extrusion molding of the sheath layer, an output diameter of the die being adjusted to 0.8±0.05mm, and a degree of vacuum in the die being adjusted for a peeling strength at 5.0-7.0N; (b), producing a first water blocking layer, configuring a high modulus water-blocking aramid as a water blocking material of the first water blocking layer, forming a first cord by one or more of fastening yarn and polyester yarn, the first cord is positioned in the first water blocking layer; (c), producing an inner protective layer, unwinding an optical fiber with the sheath layer made in the step (a) by a tight tube optical fiber pay-off rack, wherein a tension of the tight tube optical fiber pay-off rack is adjusted to 3.0-5.0N, an extrusion die, preferably a tubular extrusion die, molds the inner protective layer at the outside of the first water blocking layer, a temperature for extruding is set, and the temperature is controlled at 130-170 °C, after extruding, the optical fiber which is coated with the inner protective layer passes through a hot water tank and then a cold water tank for cooling, and the optical fiber is gathered on a reel by a traction wheel to form a cable unit; (d), producing a second water blocking layer, selecting a high modulus aramid and a water blocking yarn as materials for making the second water blocking layer, wherein a second cord is formed from one or more of fastening yarn and polyester yarn, the second cord is positioned in the second water blocking layer; a tension of an aramid pay-off rack is kept to be close to a tension of the water blocking yarn, deviation does not exceed 0.5%, the aramid and the water blocking yarn are twisted into an "S" form at a pitch of 800-1000mm to form the second water blocking layer, the second cord is placed straight at one side of the aramid; (e), producing an outer protective layer, extruding, by an extrusion mold, an outer protective material at the outside of the cable unit covering the second water blocking layer to from the outer protective layer, wherein the cable covered with the outer protective layer then passes through a hot water tank and a cold water tank for cooling, and the processed cable, as the fully waterproofed and semi-rigid pipeline-laid optical cable, is pulled onto a reel by a traction wheel.