With the extensive application of geosynthetics in the field of geotechnical reinforced projects, studies on engineering properties and reinforced mechanics of geosynthetics are rapidly developed. Present status and development at domestic and abroad of static load properties, dynamic load properties and theological properties of geosynthetics, as well as its reinforced mechanics are briefly discussed. At the same times, comparative analysis of various theories and computational methods is carried out and major problems existed in the study of geosynthetics are presented. The idea and suggestions of solving these problems are proposed.