In this paper, we consider the twisted Carlitz's q-Bernoulli numbers using p-adic qintegral on ℤ p . From the construction of the twisted Carlitz's q-Bernoulli numbers, we investigate some properties for the twisted Carlitz's q-Bernoulli numbers. Finally, we give some relations between the twisted Carlitz's q-Bernoulli numbers and qBernstein polynomials.