A method of inspecting an electrophoretic display substrate, wherein the electrophoretic display substrate comprises: a first substrate ; a second substrate ; and an electrophoretic display layer interposed between the first substrate and the second substrate, wherein the electrophoretic display layer includes a dispersion medium and at least one kind of electrophoretic ink display element which is positively or negatively charged, the first substrate includes a plurality of gate lines, a plurality of data lines, a thin film transistor arranged on intersection points between each of the gate lines and each of the data lines, a sub pixel electrode , a capacitor element including a first electrode and a second electrode , a plurality, of capacitor element electrode lines , and common electrode lines , one of a source terminal and a drain terminal of the thin film transistor is connected to the data line, the other one of the source terminal and the drain terminal of the thin film transistor is connected to the sub pixel electrode and the first electrode of the capacitor element, the capacitor element electrode lines are connected to the second electrode of the capacitor element, a common electrode is formed on one surface of the second substrate and a color filter layer is formed on the other surface, the common electrode is connected to the common electrode lines of the first substrate, and the color filter layer includes a transparent resin which is laminated on the second substrate and color filter pixels which are formed on the transparent resin, the method comprising: performing display inspection by switching all electrophoretic ink display elements included in the electrophoretic display layer of the electrophoretic display substrate through the color filter layer to be discolored to have a color with a predetermined wavelength by applying a voltage capable of discoloring the electrophoretic ink display element by passing through the color filter layer to a space between a first electrode for inspection which is provided in the first substrate and connected to the common electrode lines and a second electrode for inspection which is provided in the first substrate and connected to the capacitor element electrode lines. a first substrate ; a second substrate ; and an electrophoretic display layer interposed between the first substrate and the second substrate, wherein the electrophoretic display layer includes a dispersion medium and at least one kind of electrophoretic ink display element which is positively or negatively charged, the first substrate includes a plurality of gate lines, a plurality of data lines, a thin film transistor arranged on intersection points between each of the gate lines and each of the data lines, a sub pixel electrode , a capacitor element including a first electrode and a second electrode , a plurality, of capacitor element electrode lines , and common electrode lines , one of a source terminal and a drain terminal of the thin film transistor is connected to the data line, the other one of the source terminal and the drain terminal of the thin film transistor is connected to the sub pixel electrode and the first electrode of the capacitor element, the capacitor element electrode lines are connected to the second electrode of the capacitor element, a common electrode is formed on one surface of the second substrate and a color filter layer is formed on the other surface, the common electrode is connected to the common electrode lines of the first substrate, and the color filter layer includes a transparent resin which is laminated on the second substrate and color filter pixels which are formed on the transparent resin, <EOS>