The present invention provides a backlight light emitting diode arrangement process, which comprises the following steps: (1) determining a number Z of a backlight light emitting diode; (2) determining a distribution region of the backlight light emitting diode according to a space calculation formula, the space calculation formula comprising Y×A=Y×F×Q %, A=Q %×F, and A+F=(X/Z)×2; (3) further calculating distribution sizes of intermediate regions B, C, D and E using a gradually widened average value obtained through a formula (F−A)/(Z/2−1) according to the A and F calculated in step (2); (4) calculating a specific position of the backlight light emitting diode; and (5) drawing a ladder diagram.