The Chinese Immigration Act of 1923, also known as the Chinese Exclusion Act, was a law passed by the Canadian government that effectively banned Chinese immigration to Canada. The law was passed as an amendment to the Immigration Act of 1910, which had already imposed a "head tax" on Chinese immigrants. The 1923 Act went even further, by completely prohibiting the immigration of Chinese persons to Canada, with very few exceptions. This law was in place until 1947, when it was repealed and Chinese immigration to Canada was once again permitted. The law was widely criticized at the time, and is now viewed as a discriminatory and racist policy. In 2006, the Canadian government formally apologized for this law and for the head tax that had been imposed on Chinese immigrants in the past.

In the 1920s, the attitude of many people in British Columbia, Canada, towards Chinese immigration was negative. There was a significant anti-Chinese sentiment in the province, which was driven by a number of factors.

One major factor was economic competition. Many white British Columbians saw the Chinese as a threat to their job security, as they were often willing to work for lower wages. This led to resentment and hostility towards the Chinese.

Another factor was racism. The Chinese were often viewed as being racially inferior, and were subject to discrimination and prejudice. This was reinforced by the media and government, which often portrayed the Chinese in a negative light.

Additionally, the Chinese were viewed as a cultural threat to British Columbia's dominant Anglo-Saxon society, which further fanned the flames of anti-Chinese sentiment.

As a result of these attitudes, Chinese immigrants faced significant challenges in British Columbia, including discrimination, violence, and restrictive legislation such as the Chinese Immigration Act of 1923, which effectively banned Chinese immigration to Canada.