The invention provides an interference aligning method of wireless network. The method comprises the transmission freedom degrees that can be supported by transmission links in three cells are identified; ordering is carried out according to the transmission freedom degrees; a freedom degree relation area in which the transmission links L1, L2 and L3 are positioned is determined according to the transmission freedom degrees; according to the freedom degree relation area, a precoding matrix W1 of the transmission link L1, a precoding matrix W2 of the transmission link L2 and a precoding matrix W3 of the transmission link L3 are calculated respectively; the precoding matrix W1 is back fed to the sending end of the transmission link L1; the precoding matrix W2 is back fed to the sending end of the transmission link L2; and the precoding matrix W3 is back fed to the sending end of the transmission link L3. According to the invention, the problem in interference management in the cell edge is solved, the network throughput is higher, and realization is easier.