A one-dimensional or two-dimensional code processing module for a subway automatic ticket checker is characterized in that the one-dimensional or two-dimensional code processing module comprises a one-dimensional or two-dimensional code identifier and a control board; the one-dimensional or two-dimensional code identifier is provided with a data input interface and a data output interface; the data input interface and the data output interface are electrically connected with a first data input and output interface of the control board; the control board is also provided with a second data input and output interface, a third data input and output interface and a network interface; the second data input and output interface is electrically connected with a first data input and output interface of an automatic ticket checker master control unit; the third data input and output interface is electrically connected with the first data input and output interface of an automatic ticket checker universal control module; and the network interface is used for connecting with Internet. The one-dimensional or two-dimensional code processing module can conveniently and quickly realize one-dimensional or two-dimensional code subway ticket reading function reconstruction of the automatic ticket checker with low cost based on least modification of existing equipment.