The utility model relates to a thin plate type weighing sensor comprising strain gauges (1). The sensor is characterized in that the strain gauges (1) are relatively fixed at inner walls of strain bores (4) in an elastomer (2), wherein the radial direction of the strain bores are perpendicular to a loading surface C; and strain beams (5) with the identical thickness are arranged between adjacent strain bores as well as between the strain bores and the surface A and the surface B, wherein the ratio of the height h to the thickness delta of each of the strain beam is larger than or equal to 1.0. Besides, the strain bores are blind holes or through holes; and the resistance strain gauges with the 45-degree single shafts are pasted on the inner walls of the strain bores, wherein the resistance strain gauges are opposite to each other. According to the utility model, the problem the height of the existing thin plate type weighing sensor is large can be solved. Moreover, the main characteristics of the provided thin plate type weighing sensor are as follows: firstly, the height of the sensor is low and can reach 10mm to 15mm; secondly, the precision of the sensor is high; to be specific, the ratio of the width to the height of the strain beam can be adjusted conveniently based on the structure to realize an ideal cross section shape, so that the precision is high and can reach the level of 0.1 to 0.05 although the height is low; and thirdly, welding sealing can be realized and the sealing degree is high.