Abstract: In this paper, an experimental study of local pressure drop characteristics of gas-water and oil-gas two-phase flow through horizontal inlet, vertical upward outlet 90° bend was conducted.The inner diameter of pipe is 45 mm, the curvature radius of bend is 180 mm.Some comparisons between the experimental data and previous models or formulations were made.Based on experimental results, a new kind of general correlation for predicting local pressure drop of gas-water and oil-gas liquid two-phase flow through bend was proposed.A good agreement was achieved between the experiment and the new kind of general correlation.