Crassispira sinensis is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae.

[1] The shell contains numerous whorls, convex, slightly angulated and noduled on the periphery.

They are flexuously longitudinally ribbed below and cancellated by raised revolving lines.

The color of the shell is yellowish or flesh-brown, sometimes narrowly dark-banded at the suture and base.

[2] This marine species occurs in the China Sea and off New Guinea.