The invention discloses an early warning method and early warning apparatus for equipment in power grid. The method comprises: obtaining basic data from external equipment or from the input of a user; according to the grade value of the equipment data, calculating the relative significance/relative hidden hazard of various influencing factors corresponding to the equipment; determining the relative weights of the influencing factors according to a weight determination matrix; and through the relative significance/relative hidden hazard and the weights of the influencing factors, obtaining the equipment risk influencing degree of the equipment so that a user could configure the time and the frequency to send early warning information and use the apparatus to send the early warning information according to the equipment risk influencing degree of the equipment. The early warning method and early warning apparatus for equipment in power grid of the invention take full consideration of the significance and hidden hazard of equipment, overcome the defects that traditional equipment risk only considers the fault rate and its consequence, and fully dig the in-depth, hidden and hard-to-forecast risk factors so as to send early warning information and to realize scientific management and planning of power grid equipment in a forward-looking way.