The disclosure discloses a radio resource control method and device, the radio resource control method includes that: a User Equipment (UE) detects the Reference Signal Receiving Power (RSRP) of each component carrier and determines whether or not a preset requirement for image interference due to power imbalance is met according to the result of the detection; and a preset image interference avoidance strategy is performed if the preset requirement for image interference due to power imbalance is met. The disclosure is capable of addressing the problem that the power imbalance between component carriers adjacent in frequency degrades communication performance.