Device for detecting nitrate in sugar

A device for detecting nitrate in sugar is used for detecting the content of nitrate in sugar, and comprises a colorimetric tube with a plug for containing a sugar solution to be detected; the reagentbag comprises a first reagent bag and a second reagent bag and is used for accommodating a reagent for detecting nitrate; the vortex instrument is used for uniformly mixing the to-be-detected sugar solution in the colorimetric tube with the plug with the reagent; the detector comprises a detection unit, a display unit, an initialization unit and a control unit, and the detection unit, the displayunit and the initialization unit are electrically connected with the control unit; wherein the detection unit is used for detecting an absorbance value after a sugar solution to be detected is uniformly mixed with a reagent, and transmitting the absorbance value to the control unit; the initialization unit is used for setting a stored nitrate standard curve; and after receiving the absorbance value, the control unit compa