Filtering tool for tissue preparation

The utility model discloses a filtering tool for tissue preparation, which comprises a filtering cylinder, a first layer of filter screen, a second layer of filter screen and a third layer of filter screen are mounted in the filtering cylinder in a replaceable manner, the first layer of filter screen, the second layer of filter screen and the third layer of filter screen are sequentially mounted from top to bottom, and the apertures of the screens are gradually reduced. A liquid inlet pipe is arranged at the top of the first layer of filter screen; and the lifting lugs of the first-layer filter screen, the second-layer filter screen and the third-layer filter screen are sequentially stacked and hung on the locking bolts at the edge part of the filter cylinder body. According to the utility model, the multi-layer filtering effect is realized, the filter screen which is aged and damaged after being used can be replaced in time, the effective filtering effect is achieved, the three filter screens with different