The invention relates to a high-quality cyanide solution continuous production process and a production system of the high-quality cyanide solution, and belongs to the technical field of cyanide production. The production system comprises a metering pump, a mass flowmeter, a static mixer 7, a tube reactor 8, a gas-liquid separator 11, and pipeline valves and auto control instruments of the production system. A sampling valve 9 and a pressure auto control system 10 are arranged on a pipeline; a demister is installed inside the gas-liquid separator 11; a reaction tail gas discharging opening 12 having auto pressure control is arranged on the top of the gas-liquid separator; and a material discharging pipe and a circulating returning pipeline are arranged at the bottom of the gas-liquid separator. The method is simple; continuous production can be realize; the reaction time is short; the gas-liquid contact has no dead angle; the mass and heat transfer effects are good; the absorption rate of a raw material hydrogen cyanide is close to 100%; the aggregation discoloration caused by partial aggregation of the hydrogen cyanide gas is avoided particularly; the periodic equipment cleaning process in conventional arts is avoided especially; the labor intensity of workers is decreased; the labor force is saved; the product quality is notably improved as well; the cost is reduced by a certain degree; and accordingly the production process and the production system provided by the invention have good economic and social benefits.