In this paper, attempts have been made to analyze and understand the voltage stability problem in a radial distribution system. Till now only constant power load model has been used to analyze the voltage stability problem of distribution system. However, in a distribution system the power demand for almost all the loads, which are connected, such as television, refrigerators etc. are voltage dependent in nature. Hence, for analyzing the voltage stability problem in a radial distribution system, it is more proper to take into account the voltage dependent characteristics of the loads instead of the constant power characteristics of the loads.