The invention discloses a drill bit with string-shaped water pores and relates to the drill bit with a novel hydraulic structure. The drill bit comprises a drill bit body and cutting structures arranged on the drill bit body, cutting teeth are arranged on the cutting structures, chip grooves and flow paths are arranged among the cutting structures, the water pores are arranged in the flow paths, at least one of the water pores is the string-shaped water pore, the outlet of the string-shaped water pore is formed by at least two circles or ellipses in communication, and the longitudinal section shape of each string-shaped water pores in the lengthwise direction is fan-shaped or nearly fan-shaped in a manner of being larger in the opening and smaller at the bottom. By the arrangement, problems that drilling performance of the drill bit is lowered and service life of the drill bit is shortened due to unreasonable hydraulic structure of the drill bit in rapid drilling and high-temperature drilling are solved.