Abstract: Shale reservoir is generally characterized by large thickness and strong longitudinal heterogeneity of reservoir physical property. The multi-stage fracturing development technology for long horizontal well requires the optimization of landing point and trajectory in horizontal well. This paper put forward the concept of longitudinal integrated shale oil/gas sweet spot considering shale fracability, resources endowment, fluidity and other factors, which is a synthesis of longitudinal geological factors and engineering factors. Then the identification process and method of longitudinal integrated sweet spot was established, thus realizing the recognition process from prospective segment to favorable segment, core segment and sweet spot segment, respectively. Meanwhile, longitudinal integrated sweet spot index was designed, which can quantitatively evaluate the difference and heterogeneity in longitudinal distribution of reservoir physical properties. On this basis, the longitudinal integrated sweet spot coefficients considering effective stress distribution were designed to predict effective hydraulic fracture height, which can accurately quantify the optimal horizontal landing point and effectively guide the target point and trajectory designs of horizontal well. Field application has proved the effectiveness of this method.