A time-sharing detection control circuit connected to a plurality of amplification links, includes: a control module to sequentially output a number of switching control signals at preset intervals; a detection module electrically connected to the control module, and a change-over switch. The detection module converts output signals from the amplification links into detection signals and output the detection signals to the control module. The change-over switch is connected to the control module, the detection module and each of the amplification links, and sequentially selects one of the amplification links to be connected to the detection module at preset intervals under control of the switching control signals so as to enable the output signals from the one of the amplification links to be inputted into the detection module.