Device for collecting pipette heads and waste liquid

The utility model discloses a device for collecting pipette heads and waste liquid, which comprises a collecting box, the upper end of the collecting box is provided with a pipette head collecting groove and a waste liquid collecting groove, the lower end of the pipette head collecting groove is connected with an open sliding groove, and the lower end of the waste liquid collecting groove is connected with a waste liquid storage groove. The waste liquid storage groove extends to the position below the open sliding groove and communicates with the lower end of the open sliding groove through a plurality of liquid falling grooves, a gun head collecting box is movably inserted into the open sliding groove, and a gun head inlet communicating with the gun head collecting groove in a matched mode is formed in the upper end of the gun head collecting box; when the device is used, the waste liquid storage tank and the gun head collecting box are arranged to store waste liquid and gun heads respectively, the separatio