We investigated teachers' perceptions of an online inservice teacher course in China and its outcomes, as well as connections between these two types of perceptions. Data were collected from a sample of 251 teachers following a course on Information and Communication Technology in education using a questionnaire survey and interviews. Teachers were generally satisfied with the setup and content of the course, but considered that interaction during training and motivation were not optimal. A correlation analysis showed that teachers' perceptions of the course were significantly and positively related to their perceptions of training outcomes. Regression analyses revealed that the connection of training content with teachers' daily practice contributed most positively to teachers' perceptions of the training outcomes. Suggestions for optimizing online inservice teacher courses are provided.