The invention provides an installment used to carry on the in-system programming for the programmable logical component, the equipment includes: a document format converter used to convert the serial vector format file of the goal programmable logic component to an embedded programming format file as the in-system programming file of the goal programmable logic component; and a file interpreter used to analyze the input embedded programming format file to produce programming information conforming to the IEEE1149.1, and a JTAG connection signal is driven according to the programming information to carry on the in-system programming of the goal programmable logic component. In addition, the invention also provides a method used to carry on the in-system programming for the programmable logical component. The following effects are achieved through the technical program of the invention: while retaining the superiority suitable for nearly all the present programmable logical component manufacturer component, solving the problems that the memory resources consumption is big, the error detection ability is weak, and each stage in the whole in-system programming process cannot be displayed and distinguished.