In this paper, a new method is suggested for image hiding using chaos signals. The combination of movement of pixels and adjusting quantity of gray level is simultaneously used in this method. The process of moving pixels is done by an order which is taken from logistic map and for adjusting gray level the order of standing of bits of pixel's quantity of gray level is changed by the means of chaos signal as well. Experimental results show that this method has a proper efficiency for prevalent terms. For example the amount of entropy obtained by this method is around 7.9949 that is so near to 8 its ideal amount.