Pipette with rotatable and replaceable pipette head

The utility model discloses a pipette with a rotatable and replaceable pipette head, which comprises a pipette body, a piston rod is arranged in the pipette body, an adjusting knob is arranged at the top of the piston rod, and the adjusting knob can be rotated to adjust the amount of solution sucked by the pipette. The bottom of the pipette body is communicated with a multi-channel flow divider, the bottom of the multi-channel flow divider is communicated with eight groups of flow dividing pipes, the flow dividing pipes are annularly distributed at the bottom of the multi-channel flow divider, and the bottoms of the flow dividing pipes are sleeved with pipette heads. The utility model solves the problems that a single gun head is difficult to be vertically immersed into a reagent for correct operation in the reagent sucking process due to the existence of multiple groups of gun heads, and the inclined state of the pipette can cause the change of an air pressure surface and influence the pipetting precision, s