The invention discloses a compound clear juice beverage and a preparation method, and relates to the technology field of food processing. The method has the concrete steps as follows: carrot is processed through washing, peeling off, slicing, color-protecting, and beating; serous fluid is softened for 60 to 120 minutes in an ultrasonic field, and then is processed through centrifugation; centrifugation precipitate is added with pectase, zymohydrolysis is performed for 80 to 100 minutes and the temperature is 45 to 55 DEG C, and enzymolysis liquid is processed through centrifugation; supernatant fluid obtained in the two centrifugations is merged, chitosan citric acid solution is added, the mixed solution is cleared to gain clear carrot juice; strawberries are washed, beat, added with pectinase, and then processed through zymohydrolysis for 80 to 100 minutes, wherein, the temperature is 45 to 55 DEG C, the centrifugation is performed, the supernatant fluid after centrifugation is collected to gain clear strawberry juice; wherein, clear strawberry juice is 30 to 70 parts, and others are clear carrot juice; mixed juice which is 100 parts is added with the components as follows: sucrose is 5 parts, common salt is 1 part, citric acid is 0.15 parts, phosphoric acid is 0.02 parts, Xanthan is 0.02 parts as well as pectin is 0.06 parts, isomaltose oligosaccharide is 9 parts, and ascorbic acid is 0.02 parts; the juice after being mixed is deaerated, sterilized, and canned, so that the compound clear juice beverage is obtained. The compound clear juice beverage has good taste, rich nutrition, and clear as well as transparent state which can be kept for a long time.