The exploration and development ideas of Jurassic reservoir in Sichuan Basin have experienced the transition from conventional pore reservoir, fractured reservoir, fracture-pore reservoir, to unconventional tight oil and shale oil, and the classification of reservoir types has aroused great controversy. The Jurassic reservoir in Sichuan Basin is a large and continuous reservoir that is not controlled by structural traps. In the range of hydrocarbon source distribution, reservoir enrichment is mainly controlled by reservoirs and fractures, and the reservoirs are mainly mixed layers of sandstone, limestone and shale. Therefore, the reservoir is divided into conventional and unconventional reservoirs according to the permeability boundaries of major reservoirs in the national standard. Then, according to the different proportion of oil reserves in different reservoirs, the conventional reservoirs are subdivided into four types: pore, fracture, fracture-pore and pore-fracture, and the unconventional reservoirs are subdivided into tight oil and shale oil. On this basis, the Jurassic reservoirs in Sichuan Basin were re-classified. The reservoirs were mainly shale oil, followed by tight oil. Only one conventional pore-fracture reservoir was found. Shale oil is mainly distributed in organic-rich shale layers of Lianggaoshan Formation, Da’anzhai Member and Dongyuemiao Member. Channel sand reservoirs of Shaximiao 1 Member, Lower Member of Lianggaoshan Formation and Zhenzhuchong Member are tight oil, while tight limestone and tight siltstone are mainly interbedded or roof-to-floor. Such classification is of great significance to exploration and development.