In a technical institute,the cultivation of musicianship is an important part of quality education,and piano impromptu accompaniment is also the main content for the practice of musical instruments.

Therefore,when deducing music with form of impromptu accompaniment,the mark of a chord should embody concrete features of being concise,prompt and clear at a glance and reflecting practicality and direct perceptibility.

The key to improving the level of piano impromptu accompaniment lies in students′ change of study idea and method.

Many students can not master well an important skill of piano - playing, improvisational accompaniment because of the weak points in their teaching organization and the curriculum.

Piano improvisational accompaniment is a highly demanding skill.

To learn extemporaneous accompaniment, one must first of all have a good command of the keyboard playing skills and learn one by one the four technical "elements": chord, texture, mode, and key.

In the article,the author makes an inquiry of professional skills,harmonic,accompany music forms,so as to make an elaboration of the importance and necessary of impromptu accompany of dulcimer in an theory way.

Piano improvised accompaniment lesson is an indispensable part in music teaching for normal college students.

This paper tries to solve the problem of theory divorcing from practice from the comprehensive teaching of harmony and piano improvised accompaniment lessons and leads to some reflection from the teaching style.

The benefit of the keyboard improvisational play in social musical activities is becoming more and more evident,and keyboard improvisational play has already become one of the indispensable abilities for the professional college graduates majoring in arts.