In this paper

we obtain the revised weighted factor \%θ\-\{opt\%\} by the weighted implicit scheme on the condition of invariable mesh ratio.Then

using the very \%θ\-\{opt\%\}

we solve one dimensional heat equation and get higher accuracy than the solution of \%Crank Nicholson\% scheme is.Finally

when using the same \%θ\-\{opt\%\} and denser mesh division

we can also get the highly accurate numerical solution which is relatively good.