The Wehrl's entropties and Shannon's entropies for even and odd coherent states are studied. The results show that the Wehrl's entropics of the two states are increased along with growth of the total noise and tend to a common constant. The Shannon's entropies are decreased along with decrease of observable fluctuation. Both Shannon's entropies of the two states can be less than that of coherent state, but which is not corresponding to the appearance of squeezing effect. So, the amount of Shannon's entropy can not be a criteron of existance of squeezing.