Kinetic studies on the oxidation of biodiesel and the consumption of antioxidants were performed in this work, using the standard Rancimat method within the temperature range of 100-150 degrees C. On the basis of the length of induction period, antioxidant efficiency was ranked in the descending order of tert-butylhydroquinone (TBHQ) > pyrogallol (PY) > propyl gallate (PG) > butylated hydroxyanisole (BHA) > butylated hydroxytoluene (BHT). The natural logarithm of the initial antioxidant concentration varied linearly with respect to the induction period. Kinetic information for the consumption of the antioxidant could be obtained by pseudo-first-order reaction assumptions. TBHQhad the lowest consumption rate, followed by PG, PY, BHA, and BHT; the lower consumption rate seemed to lead to a longer induction period. The critical antioxidant concentration increased in the ascending order of PY < PG < BHA < BHT < TBHQ, basically in accordance with the order of antioxidant efficiency, except TBHQ, The apparent activation energy for the consumption of the antioxidant was determined using the Arrhenius equation: TBHQ (97.85 kJ/mol), PG (96.91 kJ/mol) > BHT (91.74 kJ/mol) > PY (82.76 kJ/mol) > BHA (80.08 kJ/mol), which agreed well with the order of activation energy for the oxidation of biodiesel. TBHQ, PG, and BHT, more temperature sensitive than PY and BHA, showed higher susceptibility to oxidative degradation at a higher temperature. The shelf life of biodiesel at ambient temperature was predicted with the extrapolation method and ranked in the descending order of TBHQ > PG > PY > BHT > BHA, basically in line with the order of the reaction constant of antioxidant consumption.