Christianity in Macau has a long history. Macau was the first point in China to which the Gospel came, brought by Jesuit missionaries in 1552, as the Portuguese came to establish a foothold in China. The Catholic Church in Macau began by only using Portuguese in its ministry since it was more interested in China and Japan. Several large catherals as well as theological College were built. The largest was St. Paul's Cathedral, of which only its front stone facade remains today. Despite 450 years in Macau, Catholics make up only about 5-10% of the population, depending on what figures you use.
The Protestants' history began with the coming of Robert Morrison in 1807. He was an employee of the British East India Company involved in translation, from which skills he was also able to translate the Bible into Chinese. Due to a number of factors, Protestant mission work declined after Morrison and only began again in the early 1900's, with several overseas denominations sending missionaries to plant churches. The Baptists came in 1904 followed by the Church of Christ in China a few years later.
Although many different denominations began church work in Macau in subsequent years, the Protestant church in Macau has never grown beyond 1% of the city's population, making it the smallest in the Chinese world by percentage. Even the number of Christians in China by percentage is greater than Macau. Today there are only a few churches with over a 100 members. Most churches have under 50 members. The churches are also involved in many other kinds of social ministry including prison and hospital visitation, outreach to children, and rehabilitation for drug and gambling addicts.