The invention provides a blanking device of a dripping hopper in a liquid transferring pipe assembling machine, belonging to the technical field of machines and solving the technical problems that the positioning accuracy for the dripping hopper is low and the like as the dripping hopper in the existing liquid transferring pipe assembling machine directly enter into an assembly line. In the blanking device of the dripping hopper in the liquid transferring pipe assembling machine, a working platform of the assembling machine is provided with a feeding rail used for transferring the dripping hopper and the assembly line positioned at the lower part of the feeding rail; the blanking device comprises a bracket fixedly connected on the assembling machine; the bracket is provided with a feedingchannel communicated with the feeding rail; an extruding part which can move up and down is arranged above the feeding channel; the bottom part of the feeding channel is provided with a discharging hole which is positioned above the assembly line; the position of the discharging hole is provided with an opening-closing structure for blocking the discharging hole; and when the extruding part movesdownwards, the discharging hole can be opened under the action of the opening-closing structure. The blanking device of the dripping hopper can transfer the dripping hopper to a clamping groove of the assembly line precisely, has simple structure and reasonable design, can realize automatic operation and lay foundation for automatic production.