With the rapid development of international communication, learners gradually begin to socialize across cultures. However, some introverted students have cross-cultural social anxiety disorder when communicating with foreign friends. In order to alleviate this symptom, this study puts forward the optimization of foreign language learning strategies based on psychological suggestion.

In this study, 400 patients with cross-cultural social anxiety disorder who meet the treatment standards were selected from the school and divided into the experimental group and the control group equally, and the number of male and female students in the two groups was the same. The experimental group and the control group were treated with psychological suggestion and routine psychological care for 12 months, respectively. The study used 3-min confidence assessment scale (3D-CAM) software to compare their social anxiety scores before and after treatment.

Before and after treatment, the average difference of social anxiety score in the experimental group was 42.5, which showed that the treatment method could effectively alleviate the disease. The value of the control group is only 16.8.

The experimental results show that the optimized diagnosis and treatment methods of foreign language learning strategies proposed in this study can effectively treat learners’ cross-cultural social anxiety disorder, and then improve the social mood of patients and students. This method has almost no sequelae and is suitable for the cure of cross-cultural social anxiety disorder.

The research is supported by: Jiangxi Social Science Planning Project (Art), English translation study of cultural landscape in Jiangxi Section of Long March National Cultural Park (No. yg2021190).