The invention relates to a DC dual power supply starting and switching current-limiting circuit, which is characterized in that two DC power supplies are connected with a starting/switching current-limiting unit through respectively contactors, the starting/switching unit is formed by an IGBT Q1 and a spike voltage absorbing circuit, the absorbing circuit absorbs voltage spikes generated by parasitic inductance on a DC power supply transmission line, and the IGBT Q1 is protected from being damaged by overvoltage. The surge current in the switching process of the two DC power supplies can be suppressed by adopting the DC dual power supply starting and switching current-limiting circuit. Meanwhile, the DC dual power supply starting and switching current-limiting circuit takes the working condition during startup of an inverter power supply into consideration, suppresses the startup surge current and can save an additional soft starting circuit. The DC dual power supply starting and switching current-limiting circuit is simple in control strategy, capable of achieving current-free closing and opening of the contactors and reliable in operation, and has good application prospects.