The hydraulic fracturing technology has been widely applied to the development of shale gas and oil reservoirs.In order to increase the productivity，the proppant and sand-carrying fluid are mixed into the fracture according to different mass ratios，which can form an effective proppant layout，thereby improving the fracture conductivity. The transportation distance and laying range of proppant in the complex fracture network are important indicators to measure the effect of hydraulic fracturing. Physical experiments are conducted to study the effects of the sand ratio，angle between main fracture and branch fracture and type of proppant on the proppant transportation and layout in complex fracture networks. It is found that：①As the sand ratio increased from 3.0% to 4.2%，the ratio of proppant layout height to fracture height in the main fracture increases from 0.44 to 0.465，and the ratio of proppant mass in branch fracture to proppant mass in the complex fracture network increases from 17% to 25%. ②As the angle between the main fracture and the branch fracture decreases from 90° to 30°，the ratio of the mass of proppant in the branch fracture to the mass of proppant in the complex fracture network increases from 22% to 30%. ③The ratio of the mass of the proppant entering the complex fracture network to the total mass of the proppant used in the experiment shows a tendency to increase rapidly and then slowly with the ratio of the experiment time to the total experiment time. When the ratio of the experimental time to the total experimental time is 0.6，the ratio of the mass of the proppant entering the complex fracture network to the total mass of the proppant used in the experiment is 65% to 80%. ④The ceramsite and self-suspending proppant are not well placed at the entrance of the fracture. The proppant layout height has obvious abrupt changes at the intersection of the main fracture and the branch fracture and at the position where the fracture height changes.