The invention discloses a backup automatic switching apparatus monitoring method and apparatus. The backup automatic switching apparatus monitoring method comprises the following steps: obtaining the wiring mode of a backup automatic switching apparatus to be monitored in a power distribution network; according to the wiring mode, calculating the loss load factor of the power distribution network after the backup automatic switching apparatus to be monitored fails; and according to the loss load factor, monitoring the importance degree of the backup automatic switching apparatus to be monitored in the power distribution network. According to the invention, the technical problem of incapability of identifying the importance degree of the backup automatic switching apparatus in the power distribution network in the prior art is solved.