A method for configuring a neighbor list is provided. The method is applied to a femtocell to establish a neighbor list. The method includes steps of: accessing a Public Land Mobile Network (PLMN) list in the femtocell, the PLMN list recording a circuit-switched (CS)/packet-switched (PS) service weighting; determining a weighting parameter with reference to history CS/PS amount information and the CS/PS service weighting of the femtocell; selecting n macrocells from the PLMN list according to the weighting parameter, n being a natural number; and filling the n macrocells into the neighbor list.