need a list of book stores who sales chinese medicine books (both in chinese and english) in Beijing

Foreign Languages Bookstore is strongly recommended. There you may find what you want. It has two branches: Wangfujing Branch and Haidian Branch. The former is lcoated at No.235, Wangfujing Dajie, Dongcheng District and the latter is located at No.25, Haidian Xi Dajie, Haidian District.
In addition, China Bookstore can be also a nice choice. It is located at No.115, Liulichang Dongjie, Xuanwu District.