The microcomputer program-controlled compressive strength tester is a new type of high-precision testing instrument researched and developed by our company according to the national standard. It is mainly suitable for testing the ring crush strength of 0.15-1.00 mm thick paper, the edge crush strength, the flat crush strength, the adhesive strength and the flat crush strength of paper tube with diameter less than 69 mm. The instrument is of Mechatronics structure, which adopts modern mechanical design concept and microcomputer processing technology for careful and reasonable design. The instrument is fixed with upper platen and has high measurement accuracy. The instrument has the functions of testing, converting, adjusting, displaying, memorizing, printing and so on. It has powerful data processing function, can directly get the statistical results of various data, and can automatically reset, easy to operate, easy to adjust, stable performance. This instrument has powerful functions, one instrument can have five test functions, such as ring pressure, edge pressure, flat pressure, bonding and flat pressure strength test of paper tube. It is a high-precision compression strength test instrument with the best performance price ratio in China at present.