The ommatidial ultrastructure of compound  eye in Panorpa nanwutaina Chou was observed with scanning electron microscopy and histological methods. The compound eye was generally semi-ellipsoid in shape, consisting of about 1 500～1 600 ommatidium, which were typically hexagonal in the central region of compound eye. Each ommatidium consisted of a corneal lens, a crystalline cone, 2 primary and 12 secondary pigment cells, a retinula, and basement membrane where the pigment granules were visible. The cornea consisted of relatively thick and laminated structure. Four cone cells were located beneath the cornea. The compound eyes belonged to apposition type. The number of secondary pigment cell was lower than that of P. communis. The corneal function and the role of interfacetal hairs and secondary pigment cell in sification were discussed.