The utility model discloses a continuous concentration device comprising a first pump; the first pump is sequentially connected with a first flowmeter, a preheater and a first heater; the first heater is connected with a first evaporator; the first evaporator is connected with a second heater through a first steam pipe; the second heater is connected with a second evaporator; the second evaporator is connected with a condenser through a second steam pipe; a discharging hole of the condenser is connected with a first storage tank which is connected with vacuum; a discharging hole of the first evaporator is connected with a second pump; the second pump is connected with a feeding hole of the second heater after being sequentially connected with a first valve and a second flowmeter; a discharging hole of the second evaporator is connected with a third pump; an outlet of the third pump is divided into two paths, wherein one path of the third pump is connected with a third storage tank after being sequentially connected with a third valve and a third flowmeter, and the other path of the third pump is connected with a feeding hole of the second heater through a second valve; and the second storage tank is connected with vacuum. The continuous concentration device can be used for effectively increasing the concentration efficiency, increasing the thermal efficiency and saving energy and is suitable for concentrating various types of concentrated solutions.