A pixel scan method, a pixel scan device, a display apparatus and a computer readable storage medium are provided. The pixel scan method includes: acquiring data signals of each column in a display image of a display panel, and determining data information of the data signals of each column and a correspondence between the data information and pixel units; determining a first set of pixel units among pixel units of a column to which a first pixel unit belongs, and data information corresponding to the first set of pixel units is the same as data information corresponding to the first pixel unit; and inputting a data signal having the data information corresponding to the first pixel unit to the first pixel unit and the first set of pixel units.