Security forces opened fire in the Yangon area of Hlaing Tharyar as protesters used sticks and knives.
The junta declared martial law in the area after Chinese businesses were attacked. Protesters believe China is giving support to the Burmese military.
Myanmar has been gripped by protests since the military coup on 1 February.
Military rulers have detained Aung San Suu Kyi, the country's civilian leader and head of the National League for Democracy (NLD) party.