The superposition states, which are composed of the eigenstates of q-deformed oscillators (i.e. q-deformed number states), are presented by making use of q-oscillators algebra. The definition of this kind of q-deformed superposition states is given, and their quantum statistical properties are studied. The ordinary squeezing and q-squeezing, furthermore, the higher-order ordinary squeezing and higher-order q-squeezing of these states are discussed. The q-deformed oscillator is nonlinear oscillator, so the ordinary superposition states are generalized.