A shutdown control method for a parallel inverter system (10, 20), wherein the parallel inverter system (10, 20) comprises at least two inverter apparatuses (101, 102), alternating-current terminals of each of the at least two inverter apparatuses (101, 102) are connected to alternating-current switches and then the at least two inverter apparatuses (101, 102) are connected in parallel, parallel connection points are connected to an alternating-current load or an alternating-current power grid; and the shutdown control method comprises the steps of: obtaining a shutdown instruction; determining a level of the shutdown instruction based on the shutdown instruction; controlling an inverter apparatus to be shut down of the at least two inverter apparatuses and alternating-current switches connected to the inverter apparatus to be shut down according to the level of the shutdown instruction; the method is characterized in that. the controlling the inverter apparatus to be shut down and the alternating-current switches connected to the inverter apparatus to be shut down according to the level of the shutdown instruction comprises: locking out instantly a driving signal for power switch devices of the inverter apparatus to be shut down in a case that the level of the shutdown instruction is determined to be an emergency level; performing the following steps in a case that the level of the shutdown instruction is determined to be a normal level: transmitting a switch-off signal to the alternating-current switches connected to the inverter apparatus to be shut down; detecting whether the alternating-current switches connected to the inverter apparatus to be shut down are switched off, wherein the driving signal for the power switch devices of the inverter apparatus to be shut down is instantly locked out in a case that it is detected that the alternating-current switches connected to the inverter apparatus to be shut down are switched off. obtaining a shutdown instruction; determining a level of the shutdown instruction based on the shutdown instruction; controlling an inverter apparatus to be shut down of the at least two inverter apparatuses and alternating-current switches connected to the inverter apparatus to be shut down according to the level of the shutdown instruction; the method is characterized in that. the controlling the inverter apparatus to be shut down and the alternating-current switches connected to the inverter apparatus to be shut down according to the level of the shutdown instruction comprises: locking out instantly a driving signal for power switch devices of the inverter apparatus to be shut down in a case that the level of the shutdown instruction is determined to be an emergency level; performing the following steps in a case that the level of the shutdown instruction is determined to be a normal level: transmitting a switch-off signal to the alternating-current switches connected to the inverter apparatus to be shut down; detecting whether the alternating-current switches connected to the inverter apparatus to be shut down are switched off, wherein the driving signal for the power switch devices of the inverter apparatus to be shut down is instantly locked out in a case that it is detected that the alternating-current switches connected to the inverter apparatus to be shut down are switched off. locking out instantly a driving signal for power switch devices of the inverter apparatus to be shut down in a case that the level of the shutdown instruction is determined to be an emergency level; performing the following steps in a case that the level of the shutdown instruction is determined to be a normal level: transmitting a switch-off signal to the alternating-current switches connected to the inverter apparatus to be shut down; detecting whether the alternating-current switches connected to the inverter apparatus to be shut down are switched off, wherein the driving signal for the power switch devices of the inverter apparatus to be shut down is instantly locked out in a case that it is detected that the alternating-current switches connected to the inverter apparatus to be shut down are switched off. transmitting a switch-off signal to the alternating-current switches connected to the inverter apparatus to be shut down; detecting whether the alternating-current switches connected to the inverter apparatus to be shut down are switched off, wherein the driving signal for the power switch devices of the inverter apparatus to be shut down is instantly locked out in a case that it is detected that the alternating-current switches connected to the inverter apparatus to be shut down are switched off.