The utility model discloses a solder flux discharge mechanism and have soldering tin frock of this mechanism, including: dactylotheca (2) for the cover is established to welding operation person's finger, centre gripping subassembly (3) are including fixing extremely fixed part (31) on dactylotheca (2) for press from both sides tight filiform solder flux, drive division (4) for the linkage of AND operation person's finger to be in order to press from both sides filiform solder flux tightly in fixed part (31) on or to unclamp, realizes holding under the pen type operation prerequisite not changing, and when utilizing traditional soldering tin frock operation, the hand action drives the change of the solder ejection of compact in order to accomplish traditional soldering tin frock, can one -hand operation when making it be adapted to the operator more and be accustomed to.