Taking Bombyx mori L as research object，its pupa were regularly anatomized and the characteristic parameters of thirty different individuals of Lepidoptera wings were microscopically measured. The results show that the development period within the pupal phase is 12-15 days，and can be divided into four stages. The wing presents different development characteristics at each stage. The forewing is triangle with 22.243 mm in perimeter and 28.305 mm2 in area and the length of nine primary veins is between 3-8 mm. As a sector，the circumference of hind wing is 16. 571 mm with 19. 936 mm2 in area，while the length of nine primary veins is between 2-6 mm. There are great changes in the perimeter and area of Lepidoptera wings after eclosion. As the forewing for example，the perimeter increase as 1.9 times and area of 3.1 times as those in late pupae period. For the hind wing，the perimeter increase as 2.1 times and area of 3. 8 times as those in late pupae period. Namely Lepidoptera wings acquire larger surface area through the procession of eclosion. And there is no significant change in the location of veins while the length is 2.1 times as that of the late pupae period. By tracking the dynamic development of Lepidoptera and holographic recording the whole process of eclosion of B. mori，a insect-inspired deployable structure is put forward to afford design ideas and basic data for the development of new space deployment structure.