Abstract: In this experiment, the growth of seedlings and roots were obviously inhibited when seedlings of Phaseolus angularis and P. radiatus were exposed to 0─4℃for 1─2 weeks, but the growth of Glycine max (L.) Merr. had not completely been inhibited. The changes in PODand ATPase isozymes of roots have been observed when seedlings were exposed to 0─4 ℃ for 1─2 weeks. The relationship between inhibited growth of seedlings and changes of POD, ATPase isozymes in three crops which were cultured at low temperature (0─4℃)was obvious.