Abstract: In this paper several weighted residual methods are used to analyse the thin shells. we adopt the double cubic B—spline as the trial function. The method of the discrete least squares method is used to analyse shallow shell and cylindrical shell with variable thiekness. Both the collocation (point) method and the collocatin (line) method are used to analyse cylindrial shells. The program of weighted residual methods is simple. The amount of input data required is small. The computing time is short, and its expense small.