The influence of secondary damage caused by freeze-thaw cycles on recycled concrete after the Alkali-Silica Reaction (ASR) was studied. The specimens were immersed in 1 mol/L NaOH solution at 80 ℃ for alkali silicic acid reaction for 28 days and then subjected to 20 and 40 freeze-thaw cycles to measure the expansion rate and relative dynamic elastic modulus of the specimen. The analysis shows that the promotion effect of early ASR on the secondary expansion of recycled concrete after freezing reaches the maximum when the content of recycled aggregate is 30%. As for the relative dynamic elastic modulus, whether early ASR can promote secondary damage after freezing and thawing depends on the alkali activity of the aggregate. The higher the alkali activity of aggregate, the weaker the promotion effect.