The utility model discloses an agricultural safe clutch with shear pins. A motor is protected. The left end of a shaft sleeve is fixed to an output shaft of the motor. A power output shaft is arranged at the right end of the shaft sleeve and is a stepped shaft. A small-diameter shaft section of the power output shaft extends into the inner circle of the shaft sleeve. The outer circle of the small-diameter shaft section and the inner circle of the shaft sleeve are supported through a bearing. A bearing cover is arranged at the left end of the power output shaft. The end face of the bearing cover abuts against the side end face of the bearing. An annular first flange is arranged at the right end of the bearing along the outer circle of the bearing sleeve. An annular second flange is arranged at the shaft shoulder of the power output shaft. A plurality of first through holes are evenly distributed in the first flange circumferentially. A plurality of second through holes are evenly distributed in the second flange circumferentially. The positions of the first through holes are opposite to the positions of the second through holes. First guide sleeves and second guide sleeves are arranged in the first through holes and the second through holes respectively. The shear pins are arranged in the first guide sleeves and the second guide sleeves in a penetrating mode. The two ends of the shear pins are pressed through gaskets and nuts.