Drip irrigation prefabricated hole main pipe, its water outlet is prefabri-cated, can be directly installed three-way connected drip irrigation pipe, without site drilling, to avoid water leakage and disconnecting phenomenon. Product selection of fast UV shielding braided material, not easy to aging corrosion; The inner layer is made of impervious PE film. Pre-fabricated hole adopts ultrasonic welding technology, standard inner tooth water outlet, no need for raw material glue tape, sealing is not easy to leak, silicone ring positioning and installation, easy to operate.