A method for forming beam of a smart antenna, comprising: forming a single beam according pre-calculated weighted values; multipath scanning an allocated area by discrete single beams with preset angle intervals and beamwidths; recording the scanning angles when a desired user is found in one or more scanning angle and calculating the multipath time delays corresponding to the scanning angles to obtain multipath delayed information; aligning time delays of the received signals on the basis of the multipath delayed information; and forming adaptive beams for the received signals whose time delays have been aligned; wherein the steps of forming the adaptive beams include: finding an initial weighted value by using a pilot signal of a special control channel as a reference signal; performing spatial domain treatment of the signal received by an antenna array by using the initial weighted value; obtaining determination output of special control channel information on the basis of the signal performed by the spatial domain treatment above; finding optimized weighted value according to a known and determined special control channel information; and using the optimized weighted value above to form beam and processing the special data channel information; wherein the steps to find the initial weighted value include: spreading and scrambling pilot bits of the known special control channel; calculating correlation matrix of pilot signal obtained by said spreading and descrambling and pilot signal received by an antenna array; and finding approximate solution of the correlation matrix as the initial weighted value according to Minimum Mean Square Error criterion. forming a single beam according pre-calculated weighted values; multipath scanning an allocated area by discrete single beams with preset angle intervals and beamwidths; recording the scanning angles when a desired user is found in one or more scanning angle and calculating the multipath time delays corresponding to the scanning angles to obtain multipath delayed information; aligning time delays of the received signals on the basis of the multipath delayed information; and forming adaptive beams for the received signals whose time delays have been aligned; wherein the steps of forming the adaptive beams include: finding an initial weighted value by using a pilot signal of a special control channel as a reference signal; performing spatial domain treatment of the signal received by an antenna array by using the initial weighted value; obtaining determination output of special control channel information on the basis of the signal performed by the spatial domain treatment above; finding optimized weighted value according to a known and determined special control channel information; and using the optimized weighted value above to form beam and processing the special data channel information; finding an initial weighted value by using a pilot signal of a special control channel as a reference signal; performing spatial domain treatment of the signal received by an antenna array by using the initial weighted value; obtaining determination output of special control channel information on the basis of the signal performed by the spatial domain treatment above; finding optimized weighted value according to a known and determined special control channel information; and using the optimized weighted value above to form beam and processing the special data channel information; wherein the steps to find the initial weighted value include: spreading and scrambling pilot bits of the known special control channel; calculating correlation matrix of pilot signal obtained by said spreading and descrambling and pilot signal received by an antenna array; and finding approximate solution of the correlation matrix as the initial weighted value according to Minimum Mean Square Error criterion. spreading and scrambling pilot bits of the known special control channel; calculating correlation matrix of pilot signal obtained by said spreading and descrambling and pilot signal received by an antenna array; and finding approximate solution of the correlation matrix as the initial weighted value according to Minimum Mean Square Error criterion.