受到2020年新冠疫情的影响，线下授课曾几度出现“停摆”状态。为响应国家“停课不停学”的号召，民族器乐教学也呈现出从以线下课程为主，向线上、线下课程交替进行的情况转变。大量线上课程的开设，给民族器乐教学带来了全新的机遇与挑战。二胡作为中国民族拉弦乐器之一，长久以来深受中国广大人民的喜爱，但由于乐器自身的特点，在教学中我们不难发现，二胡是一件入门学习较难的乐器。在众多二胡入门学习者中，处于启蒙阶段的学龄儿童占了较大比重，他们的认知和理解能力正在发育阶段。因此，学习方式的转变必然会对学生的学习带来影响，也为教师的授课带来新的挑战。

本研究以学龄儿童二胡线上一对一课程为例，采用问卷调查和访谈法，对学龄琴童、琴童家长、二胡教师三方进行调研，结合数据分析和访谈结果，对教学双方所使用的线上一对一的学习平台、网络与硬件设施以及教学满意度等方面进行研究。通过研究发现，线上一对一课程一方面为学生的学习带来了便捷，满足了“不停学”的需求；但另一方面，二胡线上教学实践发展还不成熟，出现了许多令人深思的问题。

文章共分为四个章节：第一章为绪论，分为研究背景、研究目的与意义，核心概念界定与研究综述、研究方法四个部分。第二章是对二胡在线网络课程现状的研究。根据课程类型及特点的不同分为依托于在线教育平台的二胡网络课程、依托于自媒体的二胡网络课程、依托于陪练APP的线上一对一陪练课、线上一对一二胡教学课程四类。第三章通过问卷调查数据及访谈结果分析，对二胡线上一对一课程使用的教学平台、网络及硬件设施、课程满意度及影响因素，以及线上一对一教学对二胡基本演奏问题的解决等几个方面进行分析。第四章总结二胡线上一对一这种教学方式的优势、不足，并为二胡线上一对一教学方式的不足及未来发展提出可供参考的个人建议。

Offline classes were suspended several times due to the COVID-19 pandemic in 2020. In response to the national call of "suspension of school", the teaching of ethnic instrumental music has for the first time changed from offline courses to online and offline courses alternately. A large number of online courses have brought new opportunities and challenges to the teaching of ethnic instrumental music. As one of the Chinese stringed instruments, the erhu has long been loved by the Chinese people. However, due to the characteristics of the instrument itself, it is not difficult to find in teaching that erhu is a difficult instrument to learn. Among many erhu beginners, school-age children in the initiation stage account for a large proportion, and their cognitive and understanding abilities are developing. Therefore, the change of learning mode will inevitably affect students' learning, and also bring new challenges to teachers' teaching.

This study in school-age children erhu one-on-one courses online, for example, using questionnaire and interview method, parents of school-age little musician, little musician, erhu teacher research, combined with the data analysis and interview results, used by the two parties in the teaching of one-on-one online learning platform, network and hardware facilities and the perspectives of teaching satisfaction. Through research, it is found that online one-to-one courses on the one hand bring convenience to students' learning and meet the demand of "non-stop learning"; But on the other hand, the online teaching practice of erhu is not mature, and there are many thought-provoking problems.

The article is divided into four chapters: The first chapter is the introduction, which is divided into four parts: research background, research purpose and significance, core concept definition and research overview, and research methods.The second chapter is the study of the current situation of erhu online network course. According to the different types and characteristics of courses, it can be divided into four types: erhu online courses based on online education platform, Erhu online courses based on we-media, online one-to-one erhu training courses based on training APP, and online one-to-one erhu teaching courses. The third chapter analyzes the teaching platform, network and hardware facilities, course satisfaction and influencing factors of online one-to-one erhu course, as well as the solution of basic performance problems of online one-to-one erhu teaching through the analysis of questionnaire survey data and interview results. The fourth chapter summarizes the advantages and disadvantages of one-to-one erhu online teaching, and puts forward personal suggestions for the shortcomings and future development of one-to-one erhu online teaching.