Alginite and sporinite is suggested to be main macerals of hydrocarbon generation.Based on the study, a hydrocarbon generation model of source rocks in Subei basin is established.

• 确认藻类体和孢子体为其最主要的生烃组分，在此基础上建立了苏北盆地下第三系烃源岩的生烃模式。