With Lentinus edodes fruiting body as research material,fruiting body lentinan yield were compared in different batches,different parts and different maturity. The results showed that: the lentinan yield of first batches was lowest,and there was a significant difference between the first batches and the second or third batches,the correlation coefficient was lower(which was 0. 177 7 and 0. 075 9),and there was no difference between the second and third batches of lentinan,and the correlation coefficient bet...