Guangdong province as the pioneer of the national economy in China, occupies an important position, hence, study of carbon emission of Guangdong province, is of great significance. To study carbon emission condition in Guangdong province from the perspective of the whole national economy requires use of input-output analysis method. By use of input-output table in 2007 in Guangdong province, and measurement of direct carbon emission intensity and full carbon emission intensity in different sectors in 2007 in Guangdong province, this article divides the 27 industries of Guangdong province into three types, and makes a conclusion of carbon emission characteristics of different industrial sectors. According to the characters of their carbon emissions, we can put forward different mitigation measures