Probabilistic load flow is the foundation of solving problems with uncertainties in the power system.With the development of intermittent energy and the raise of randomness of power systems，researches on probabilistic load flow have extensively increased in recent years.This paper is intended to make a brief survey on algorithms for probabilistic load flow by proceeding from the principle of the algorithms and their merits and demerits.Firstly，problems studied by probabilistic load flow are treated including the development of probabilistic load flow，calculating models and evaluating indicators，followed by applications of probabilistic load flow in power systems.The primary coverage is the review of different algorithms of probabilistic load flow classified according to the differences in theory.The main contents involve the principles，advantages and drawbacks and applicability of different algorithms，followed by an overall evaluation and their development trend.Vistas of research are projected into the future.