  In this paper, for an $\lambda$-strict pseudocontraction $T$, we prove strong
convergence of the modified Mann's iteration defined by
$$x_{n+1}=\beta_{n}u+\gamma_nx_n+(1-\beta_{n}-\gamma_n)[\alpha_{n}Tx_n+(1-\alpha_{n})x_n],$$
where $\{\alpha_{n}\}$, $ \{\beta_{n}\}$ and $\{\gamma_n\}$ in $(0,1)$ satisfy:
(i) $0 \leq \alpha_{n}\leq \frac{\lambda}{K^2}$ with
$\liminf\limits_{n\to\infty}\alpha_n(\lambda-K^2\alpha_n)> 0$; (ii)
$\lim\limits_{n\to\infty}\beta_n= 0$ and
$\sum\limits_{n=1}^\infty\beta_n=\infty$; (iii)
$\limsup\limits_{n\to\infty}\gamma_n<1$.Our results unify and improve some
existing results.
