the redshift drift observation from SKA. We will simulate the redshift drift data of SKA and use these data to constrain cosmological parameters. We have the following aims in this work: (i) We wish to learn what extent the cosmological parameters can be constrained to by using the redshift drift data of SKA-only. (ii) What will happen when the redshift drift data of SKA and E-ELT are combined to perform constraints on cosmological parameters. (iii) What role the redshift drift data of SKA will play in the cosmological estimation in the future.

We will employ several typical and simple dark energy models to perform the analysis of this work. We will consider the $\Lambda$ cold dark matter ($\Lambda$CDM) model in this work, which is the simplest cosmological model and is able to explain the various current cosmological observations quite well. The $w$CDM model is the simplest extension to the $\Lambda$CDM model, in which the equation-of-state (EoS) parameter $w$ of dark energy is assumed to be a constant. The Chevalliear-Polarski-Linder (CPL) [@Chevallier:2000qy; @Linder:2002et] model of dark energy is a further extension to the $\Lambda$CDM model, in which the form of $w(a) = w_{0} + w_{a}(1-a)$ with two free parameters $w_0$ and 