In this paper,we mainly investigate some properties of meromorphic solutions for several q-difference equations,which can be seen as the q-difference analogues of Painlevé equations.Some results about the existence and the estimates of growth of meromorphic solution f for q-difference equations are obtained,especially for some estimates for the exponent of convergence of poles of △qf(z) :=f(qz)-f(z),which extends some previous results by Qi and Yang.