Fine natural pigment was extracted from Chufa peels. The pigment was purified by macroporous resin,and its stability and antioxidant activities were evaluated. The fine pigment with high color value was obtained using the D101 macroporous resin washed with gradient aqueous ethanol. The color value was 379. 1,and the total flavonoids content was 120. 43 mg /g. The pigment was stable in neutral solution at temperature lower than 100 ℃. Its stability was affected by the pH. It was stable in the solution in weak acids,neutral solution and weak base. The neutral additives do not affect its stability. The pigment will change the color in strong acid or strong base as well as with strong acid or basic additives. The common salt of Na+,K+or Mg2 +has no effect on the stability,however,Al3 +,Cu2 +or Fe3 +will change the color of the pigment. The purified pigment showed very strong reducing power and free radical scavenging activities against ABTS+·,DPPH,and its scavenging capacities were stronger than those of rutin at the same concentration. The results suggested that the chufa peels pigment can be regarded as a natural antioxidants and has a great potential to explored as dietary edible pigment in future.