The invention relates to the technical field of oil (gas, water) well drilling, in particular to a continuous oil pipe-based high-pressure jet drilling system with guiding function. A continuous oil pipe, a connecting joint, a drill collar, a guide device, an electric motor device, an orienting device and a high-pressure jet drill of a down-hole drilling assembly of the system are connected in turn; a cable is embedded inside the continuous oil pipe; an engineering and geologic parameter measuring instrument is arranged in the guide device; the electric motor device consists of a high-power motor, a speed reducer and a lubricant compensating device; a torque sensor, a temperature sensor and the like are arranged in the motor; the orienting device consists of a driving hydraulic cylinder, a rotary guide wing and an orientated measuring and controlling system; the lower part and the side face of the high-pressure jet drill are provided with cutting blade wings; a polycrystalline diamondand a YD alloy are embedded on the cutting blade wings; and a plurality of wear-resistant high-pressure nozzles are spirally distributed on the lower part of the high-pressure jet drill. The drillingsystem has guiding function, down-hole information is known in time, accurate traction control is realized and the aim of drilling efficiently is fulfilled.