A sprinkling angle-adjustable swinging sprinkler with arc chutes is a water communicating wet type commutator. A gear set is of a wet type, the gears of the gear set are restrained and highly precise. A right shifting chute and a left shifting chute, of a driving plate (598), with gradually reducing inclined angles are sleeved outside each swinging sprayer (59) of the sprinkling angle-adjustable swinging sprinkler. Four driving plates (598) are employed, and each two share a shifting gear with a handle. and a right shifting chute and a left shifting chute with gradually reducing inclined angles are sequentially arranged on each driving plate (598). Each shifting chute is a section of a logarithmic spiral line, of which the pressure angles at each part are equal to form the sprinkling angle-adjustable swinging sprinkler, with arc chutes, of which the precision is high and the angle is accurate. The problems that reversing is difficult and unreliable and sprinkling angle is inaccurate are solved.