This study investigated participants' perceived attitudinal learning in language massive open online courses (LMOOCs). A mixed-method design was used to evaluate the attitudinal learning outcomes of 151 participants who completed the attitudinal learning questionnaire at the middle and end of the course, as well as 10 participants who participated in interviews. The questionnaire was used to measure four areas of attitudinal learning: cognitive, affective, behavioural and social. Results showed that participants perceived positive learning outcomes in cognitive learning, behavioural learning and social learning, providing insights into evidence that an LMOOC can be a useful tool to support positive attitudinal learning toward learning Chinese language and culture. Special attention should be paid to designing and facilitating LMOOCs in various contexts to further understand language learners and their attitudes.