In this paper, connection technique theory, video analysis, case analysis,
diagnostic analysis and other methods are used to conduct in-depth research on
tactics. The author takes 7 tactical video cases of high-level athletes as examples, The
purpose of the monographic study and diagnosis analysis is to explore the influence
and practical application of connection technique theory in 40 + era on table tennis
players' tactical ability. The results show that even the high-level athletes have not
mastered many tactical routines before they have established the table tennis law of
line change. The main reason is that they lack the support of connection technique
theory. The only way to do this is to promote connection technique and open up
players' tactical thinking, Only by breaking away from the shackles of the traditional
"routine ball", can the players change the "routine ball" into " law of line change", after
systematic training, the final goal of connect is achieved.