He is good at China art history and ancient painting and calligraphy appraisal, and also good at landscape painting and calligraphy. For decades, Mr. Xu Bangda has enjoyed the treasures of calligraphy and painting in the Qing Palace and numerous public and private collections at home and abroad. From 65438 to 0978, at the invitation of National Cultural Heritage Administration and the National Cultural Relics Appraisal Committee, a national traveling appraisal expert group of calligraphy and painting was formed with Mr. Xie and Mr. Liu Jiu 'an, which lasted for eight years and appraised and evaluated the works of calligraphy and painting collected by cultural and artistic institutions in various provinces, municipalities and autonomous regions. It has become a multi-volume catalogue of ancient paintings and calligraphy in China, and has made outstanding contributions to the study of Gu Shuhua in China and the construction of museums. After 1980s, he visited the United States, Australia, Canada and other countries for many times, inspected China's overseas paintings and calligraphy, and conducted academic exchanges with foreign experts, and achieved many academic achievements.
On the eve of liberation, 95% of the original collection of the Forbidden City was escorted to Taiwan Province Province, while some ancient books and scrolls were taken to the northeast by Puyi and then scattered among the people. In order to enrich the collection of the gallery of the Palace Museum as soon as possible, Xu Bangda often travels between other places and Liulichang in Beijing to collect extensively.