Aim To study and develope CAI software for tolerance experiments. Methods Taking Visual Basic6.0 as main developing tool

synthetically appling multimedia technology

such as text

graph

vice

and animation we have designed the applied software. Results The demonstration of experiment contents is strai ght forward and inpessive. The data processing with various algorithm can be compared and selected. The analyzed results could be expressed in geometric figure

and experiment reports can be printed. Conclusion The software has appropriated for CAI of part of experiment contents. After further development and perfection the software can be applied in tolerance experiment instruction.