Abstract: To improve the convenience of coiled tube drilling trajectory design, we employ COM component based VB and MATLAB hybrid programming method and encapsulate the drawing code.It can draw the corresponding figure and compare the characteristics of different parameters figures,if only parameter value is instantaneously changed.We realize the calling of VB based multiple modules to one MATLAB program, which decreases the workload of program writing and improves software development efficiency.

Key words: Visual Basic, MATLAB, trajectory design, hybrid programming, well