The invention discloses a pixel structure of a thin film transistor liquid crystal display, which comprises pairs of parallel scanning lines (1), data lines (2) and a plurality of pixel units (3), wherein the pixel units (3) are defined by the scanning lines (1) and the data lines (2), which are vertically crossed; each pixel unit (3) corresponds to two scanning lines (1); each pixel unit (3) comprises a pixel electrode (4) and a thin film transistor (5); grids (6) of every two adjacent thin film transistors (5) are connected with different scanning lines (1); and distances between the grids (6) of any two adjacent thin film transistors (5) arranged between two scanning lines (1) along the directions of the scanning lines (1) are equal. In the invention, by changing relative positions of components in the thin film transistors, grid-drain parasitic capacitances can be consistent with the characteristics of the components of the thin film transistors, so that longitudinal moire fringescaused by different grid-drain parasitic capacitances are avoided and the quality of a picture of the display is improved.