An analog output buffer circuit which suits for the two-dimensional display can improve the problem of fuzzy output signal. The circuit includes transistor, current source, and input capacitance, upper switch, and lower switch, the first switch, the second switch, the third switch. Thereinto, the transistor and the current source are in series connected between the first voltage source and the second voltage source. When there is leak current, the current source will supply compensation current to the transistor. The upper switch and the first switch are guided during the first period, and the lower switch and the second switch are guided during the second period, thereinto the second period is after the first period. These switches are used to improve the defects that the potential of output signal which is after the buffer circuit and input signal are different.