As education continues to develop, blended learning is now the most critical instructional design in the education industry. Blended learning is an instructional approach that helps to increase student autonomy and competence in the learning process. Also, including peer assessment in blended learning can be effective in encouraging learning or helping each other master a learning topic. Thus, this study explored blended learning with peer assessment model with college violin students. The study's objectives are:(1) To study the effectiveness of blended learning with a peer assessment model on students' violin performance skills and learning attitude. (2) To study students' satisfaction the blended learning with peer assessment model. This study was conducted mainly among college students. The research on the effectiveness of students' performance skills and learning attitude was conducted through an experimental method. The subjects of this study were second year violin students from a college in Guangxi. Forty students were selected for this study and divided into two groups one experimental group and one control group. An experimental method was used to investigate the effectiveness of students' performance skills and learning attitudes. The data was analysed using MANOVA test. Based on the experimental data it was shown that the performance skills of the control group (mean 69.75, SD=4.90) and experimental group (mean 75.95, SD=7.40). This indicates that the performance of the control group was significantly lower than that of the experimental group. Similarly, in terms of attitude towards learning, the performance of the control group (mean=81.70, SD=3.67) and the experimental group (mean=85.90, SD=5.52). This also shows that the performance of the control group was significantly lower than that of the experimental group.Thus, it was found that blended learning with peer assessment model significantly improves students' performance skills and learning attitude. This study fills a current research gap in music by adding peer assessment to blended learning. It is also an innovative idea and valuable. The blended learning with peer assessment model was effectively applied to the students through the design and refinement of the lesson plans. Future researchers will be able to provide more platforms to understand the musical aspect of the work. This will help future researchers understand how they achieve and define the pedagogical goals in their teaching. Moreover, to innovate and improve in the process of development.