The laboratory dropwise adding reaction device comprises a dropping liquid container (1), a puncture outfit (2), an air guide pipe (3), a first sealing plug (4), a liquid guide pipe (5), a dropping liquid needle (8), a second sealing plug (9) and an operation frame (10), the first sealing plug is used for sealing the opening part of the dropping liquid container; the front end of the puncture outfit is conical, the side face of the puncture outfit is provided with an air guide pipe connector, the tail end of the puncture outfit is provided with a liquid guide pipe connector, and the air guidepipe connector and the liquid guide pipe connector are respectively provided with an inner channel communicated with the front end of the puncture outfit. The conical front end of the puncture outfitpunctures the first sealing plug to enter the opening part of the dropping liquid container, and the air guide pipe connector is connected with the air guide pipe; the liquid guide pipe connector is connected with a liquid guide pipe; one end of the dropping needle is connected with the catheter, and the other end penetrates through a second sealing plug at the opening of the reaction container toenter the opening of the reaction container; during use, the dropping liquid container is hung on the operation frame, and dropping liquid in the dropping liquid container enters the liquid guide pipe through the front end of the puncture outfit and then is dropwise added into the reaction container through the dropping liquid needle.