Based on the principle of piecewise compensation, a modified high-order compensation technique with adaptive feedback control scheme for bandgap reference is proposed. This method focuses on forming multiple local extrema of the curve of reference voltage instead of single valley or peak in the entire operating temperature range, which significantly improves the temperature independence. The circuitry is simulated in CSMC 0.6 mum CMOS process, and it has a temperature coefficient in the -55degC to 105degC range of 0.46ppm/degC (average) with power supply current lower than 0.2 muA.