At present, with the rapid development of the Internet and its close connection with our life, more and more educators apply the Internet to teaching. However, there is little research on the application of the Internet in solfeggio teaching, and there are some problems in the teaching process, such as nonstandard use methods, inability to highlight teaching objectives, and mismatch with students’ professional level. On the premise of fully understanding the teaching objectives of solfeggio in China, this paper designs an experiential teaching system of solfeggio in normal universities based on machine learning algorithm, studies the application of digital technology in solfeggio, including Internet technology, multimedia digital technology, and the use of music software, and analyzes the auxiliary role of digital technology in solfeggio teaching by combining the specific teaching contents of online solfeggio teaching during the epidemic period. In this experiment, the average classification accuracy of WNB algorithm is 0.767, while that of BP algorithm is 0.683. Experimental results show that WNB algorithm outperforms BP algorithm in classification. At the same time, in terms of time efficiency, the average time consumption of WNB algorithm in this experiment is about 0.026 s, while that of BP algorithm is about 0.45 s. Compared with WNB algorithm, the time consumption of WNB algorithm is less. Through concrete practice, it is proved that the combination of solfeggio teaching and digital technology is of great significance to both teachers’ teaching and students’ learning.

The teaching quality of primary and secondary schools is closely related to the level of teachers’ knowledge and abilities. Besides, the level of teachers’ knowledge and abilities is directly related to the quality of teachers’ pre-service education. In this research, 177 teachers who work in primary and secondary schools and graduated from a music major at a normal university in Guizhou from 2016 to 2020 were surveyed by random sampling to identify the current knowledge and abilities of primary and secondary music teachers. Apart from that, Excel and SPSS software were used for the statistical analysis of questionnaire data. As shown by the results, the music teachers in primary and secondary schools have a solid grasp of the laws and regulations related to education, knowledge, and subject-professional knowledge, but their abilities of subject-professional skills and comprehensive abilities need to be improved, especially the abilities of music creation, choreography, small band rehearsal, and information technology application and research abilities. It is hoped that this research could provide enlightenment and references for the reform and development of music teachers’ pre-service education in primary and secondary schools in China.