. We cultured oocytes with mandibular organ (MO)as group 1, and oocytes with MO and X-organ-sinus gland (XO-SG) as group 2 . Oocytes cultured with medium were set as control. MO excretion promoted oocyte maturation by increasing the oocyte diameter at the 1^st, 3^rd, 6^th, and 14^th day after eyestalk ablation, particularly on the 6^th day (<0.01). Incubation with XO-SG significantly inhibited oocyte development (FAMeT expression. Levels were 265% higher than 6 and 14 days after eyestalk ablation, and were significantly higher than that in the control group (without MO) expression levels were lower on day 14 than that on day 6 and there was no change on day 1 and day 3 after eyestalk ablation>0.05). Our results suggest that the functional material in MO induces oocyte maturation, with the effect being strongest 6 days after eyestalk ablation. MO mRNA was downregulated by the XO-SG causing inhibition of oocyte maturation .