The utility model relates to the technical field of sample diluting equipment, in particular to a sample diluting device for inspection, which comprises a main body, the main body comprises a top cover and a diluting
barrel, the top surface of the top cover is provided with a sample inlet hole and a
diluent hole, a liquid inlet hopper is fixedly inserted into the inner wall of the sample inlet hole, a liquid inlet
pipe is fixedly inserted into the inner wall of the
diluent hole, and a liquid outlet
pipe is fixedly inserted into the liquid inlet
pipe. The top end of the liquid inlet pipe communicates with a
diluent container, a first
electromagnetic valve is fixedly connected to the outer wall of the liquid inlet pipe in a sleeving mode, a double-shaft motor is fixedly connected to the interior of the top cover, and a first
motor shaft of the double-shaft motor is in transmission connection with a first gear. According to the device disclosed by the utility model, the top cover, the diluent container, the double-shaft motor, the stirring unit, the diluting
barrel, the gear I, the electric telescopic rod, the one-way bearing, the gear II, the turntable, the plurality of sample containers and the
electromagnetic valve II are arranged in a matched manner, so that the device can be used for automatically stirring and diluting by driving the double-shaft motor; and an operator does not need to repeatedly add or replace the sample container, so that the working efficiency is improved.