At which university in China can I study interior design?

Universities in China offer undergraduate or graduate degrees in this subject area, as well as associate's degrees.
I would recommend going to College of Architecture and Planning at Hunan University of Science and Technology (HUST). HUST is one of the top universities on China's mainland, with a rich history spanning more than 50 years--a true gem among Chinese universities. It has 45 schools with 53 majors for undergraduates to choose from, 26 doctoral programs for Ph.D students and 29 master's degree programs for Master’s degree students. In addition, HUST has 3 Doctoral Programs Leading To A Thesis Degree With Highest Academic Rank For Foreigners (The Doctoral Degree which leads to a dissertation on social sciences).

The University of Beijing covers all aspects in interior design. There is a major degree and a minor degree in this field. The university also offers short programs such as (1-month program) and (3-month program) for students from other countries who are interested to complete their studies in China.
Students have access to both design studios and workshops, some of which date back to the 1950s; and the facilities include an art gallery, museum, library, as well as numerous laboratories that support the study of Chinese painting, calligraphy, clay sculpture, Western paintings and objects.
In 2013 one student graduated with honors from this school and he immediately got employed by an international company on his graduation day.

Li Jia Fang Interior Design Institute (LJFDI) was founded in 1986, four years after the establishment of the institute's predecessor Lida Design Institute (LDI). After nearly 25 years of development, it has grown into a state-level design education and training facility with a distinctive artistic tone among China's interior design teaching institutions.
Location: Shandong Province

At the Beijing Institute of Fashion Technology, you can learn how to become an interior designer. This is one of the top schools in China when it comes to their fashion design program as well as their interior design program. Students who study here are offered a full curriculum that covers everything from how to select furniture for your home, how to prepare a successful real estate space, and how to promote designs by providing them with competitive marketing tools etc.
Some notable professors teaching there include Chen Guang-yu and Hu Qing-Yin who have both been honored by Taiwan's Ministry of Education for their contributions in both the fashion industry and people's tastes on styles of life.

The Shanghai University of Arts and Wuxi Jianghan University College of Design offer bachelor's degree courses. Both universities are located in Jiangsu Province. There are also interior design schools in Guangzhou, Shanghai, Dalian, Xiamen and Shenzhen. All the universities have undergraduate programs as well as distance-learning options for international students interested in learning about Chinese culture or exploring a new market to get their business into.

One of the main universities in China is Tsinghua University. It offers a bachelor's degree program for interior design.
When it comes to European-style architectural education, one can find what they are looking for at the Tongji University. This school also offers a four year undergraduate course for people interested in study Interior Design and Architecture furniture as well as product design.