The Printed Circuit Board is the support body and electrical connection provider of electronic com- ponents. Whether a PCB whose electronic components have been welded well can work normally depends on whether the components are in good conditions or not. The test for the electronic compo- nents that have been welded on PCB thus becomes absolutely necessary. And because of this, ICT has become the industry normative nomenclature. Based on this background, this paper firstly gives the isolated method of circuit board components, then it designs the control system based on FPGA. Each module has been controlled by the FPGA. The actual products show that the control system of the ICT is not only good in the function, but also good in efficiency and flexibility. It is able to adapt to a wide range of PCB online detection.