This work offers an analogue of Householder's Method for solving a root-finding problem f (x) = 0 in the p-adic setting. We apply this method to calculate the square roots of a p-adic number a ∈ Qp where p is a prime number, and through the calculation of the approached solution of the p-adic polynomial equation f (x) = x 2 − a = 0. We establish the rate of convergence of this method. Finally, we also determine how many iterations are needed to obtain a specified number of correct digits in the approximate.