The invention discloses a reaction device and a reaction process for an alkaline melt workshop section of resorcinol, and belongs to the technical field of production of an important chemical organic intermediate of resorcinol. Vertical helical ribbon reactors are connected in series, and certain flow rate, concentration and temperature are controlled to realize continuous industrial production. The reaction process comprises the following steps of: metering reaction materials, feeding in a helical ribbon reactor heated by a jacket, and performing eutectic melting reaction at certain temperature; and making a reaction product enter the next procedure for posttreatment through conveying vertical pipe and side pipe. The invention has the advantages of simple operation, low equipment investment, high thermal efficiency, cleanness, environment friendliness, and the like, and is suitable for industrial production.