In order to solve the problem of the serious steam channeling in the development of steam huff and puff and low reserve tapping efficiency of low permeability reservoir of Block 1 in Jinglou oilfield of Henan Province, high-resolution sequence stratigraphic classification and correlation are made for the III 5-6 - IV 1-3 of Hetaoyuan Formation of Block 1 in Jinglou oilfield based on the theory of high-resolution sequence stratigraphy. III5-6- IV1-3 can be divided into 3 middle-term, 10 short-term, 25 super short-term cyclic sequences according to boundaries. This paper provides a new thought for broad exploration fields.