The training of residents majoring in ultrasound needs not only to pay attention to the teaching of speculative knowledge

but also to look at pictures and talk

which is based on a large number of diagnostic ultrasound cases

training the residents to find

discover and discriminate the lesions from the ultrasonic images to finally form a sharp recognition and diagnosis ability. This study used the instant messaging tool WeChat to establish a virtual learning platform and implement a case based teaching process through this platform

which can avoid the limitations of time and space

and make the communication between teachers and students faster. According to the questionnaire survey

residents generally believed that the training mode can effectively improve learning efficiency and professional ability and hope to add this training mode to the basis of traditional teaching mode. The results of resident case analysis showed that the diagnostic accuracy of residents gradually increased during the training process. The model of WeChat platform combined with case teaching can provide new ideas and methods for standardized training of resident doctors in ultrasound specialty.