The utility model relates to a technical field is prepared to solution, is a device is prepared to aqueous ammonia solution, and it includes prepares medical kit and ammonia treatment device, is provided with and prepares the blowdown connection of the inside intercommunication of medical kit respectively and go out liquid in the bottom of preparing the medical kit and take over, is provided with and prepares the inside aqueous ammonia that advances that communicates of medical kit respectively at the top of preparing the medical kit and take over and vent connection, is provided with the ammonia treatment device that can absorb by the vent connection combustion gas in vent connection's gas outlet department. The utility model has the advantages of reasonable and compact structure, convenient to use, the ammonia that will volatilize out that can be timely is handled, the gravity that utilizes aqueous ammonia solution self is simultaneously carried aqueous ammonia solution to the aqueous ammonia medical kit in, both high efficiency the completion preparation of liquid medicine, can greatly alleviate volatility gas again to the injury that personnel caused, the utility model discloses equipment is small, easy operation, is applicable to production site, and through the practice, the result of use is good.