The invention discloses a liquid crystal display panel and a method for making a substrate thereof. The liquid crystal display panel comprises a first substrate and a second substrate; the first substrate comprises a driving component, a black matrix layer and an interspace unit. The method for making the substrate comprises the following steps: forming the driving component on a light-transmitting driving component; forming the black matrix layer on the driving component; and forming the interspace unit on the black matrix layer. The method can ensure precise alignment of substrates and process quality.