In recent years, against the backdrop of the rapid development of telecommunication tools as well as the onset and continued existence of COVID-19, the way people communicate has been greatly changed. In cross-cultural and multi-lingual settings, remote interpreting is playing an increasingly important role, and for interpreters, the way of obtaining information becomes multi-dimensional as the source texts come in various modes. The paper, therefore, intends to observe the performance of a professional simultaneous interpreter at an online world dental conference, with the focus on how the interpreter deals with multimodal source information and the subsequent interpreting strategies. It is hoped that the research could provide insights on multimodal interpreting research and suggestions for better remote interpreting practices in the future.