Full-automatic total hardness analyzer

The utility model discloses a full-automatic total hardness analyzer which comprises a step-shaped working platform, a sample disc device, a sample grabbing device, a reagent adding device and a detection device are arranged on the working platform, and a PLC (Programmable Logic Controller) control system is arranged in a cavity of the working platform. The sample grabbing device, the detection device and the reagent adding device are all connected with the PLC control system; during working, a plurality of sample cups are placed in the sample disc device, the sample grabbing device grabs one of the sample cups and then places the sample cups into the detection device, the reagent adding device drips liquid into the sample cups after rotating to complete reagent adding, and the detection device works to detect and analyze the total hardness. The full-automatic detection device is ingenious in conception and compact and reasonable in layout, automatic reagent adding, automatic titration, automatic stirring and