AbstractThirty seven species of Chaetognaths which are divided into 3 ecological groups, i. e. warm-water (tropicaland subtropical species), warm-temperate and bathybic group have been recorded in China seas. The num-ber of species increases from north to south and from inshore to offshore. The Chaetognaths in China seascan be differentated into the fauna of warm temperate, mixed tropic-warm temperate and tropical oceanzones in geographical characteristics.