In the Theater Music of beiguan（北管）, Jiahua（加花） is one of the most important performance way, performer may use it appropriately. It not only shows the ability of performer, but makes the Theater Music more varied.In this paper,I will discuss the old style Theater Music “Luhua”（蘆花）and new style Theater Music “Biexu”（別徐）, according to the versions taught by beiguan master CHIU, HUO-LONG（邱火榮）. Explaining how the performer uses the different skills of jiahua from the different musical form in the Graduate Concert.Finally, I also put my own profound experience in learning Erhu to readers. Especially in the basic musicianship of practicing musical instrument, expecting to provide the way for beiguan baginners.