The invention discloses a method, device and system for determining refrigerator breakdowns. The method comprises the steps that according to the running state of a refrigerator, a first threshold value interval corresponding to at least one large power electricity load which currently runs is determined; total power parameters of the M electricity loads of the refrigerator in the running process are obtained, and the M electricity loads comprise the at least one large power electricity load and at least one small power electricity load which currently run; if the condition that the total power parameters are not located in the first threshold value interval is determined, the condition that breakdowns occur to the large power electricity loads is determined; and if the condition that the total power parameters are located in the first threshold value interval is determined, the condition that breakdowns occur to the small power electricity loads is determined, and according to an independent power parameter of each small power electricity load when run alone, the small power electricity loads which break down are determined. The method is used for solving the problem that existing after service is low in efficiency for breakdown removal.