“Surrogate Motherhood” is one of the hot topics that people have discussed all over the world. The foreign countries have already had many experiences of the surrogate motherhood over 20 years, but the policy of the surrogate motherhood has been chameleonic in Taiwan. Therefore, the topic of the surrogate motherhood has still discussed in Taiwan. The purpose of this paper is to analyze the cognition of the surrogate motherhood that the public has in Taiwan. This paper generalizes the cognition and attitude tendency of the surrogate motherhood that the public has via questionnaire design and the investigation and to verify the factors that influence the cognition of the surrogate motherhood in order to provide the information to the government to carry out the policy legalization of the surrogate motherhood and the future researches. This paper is analyzed and measured by using the SPSS11.0 version computer software, and is to analyze the relationships between the cognition and population statistic and socioeconomic variables by using the chi-square test, and is to verify the correlation factors of influencing the public accept the surrogate motherhood before and after legalization via Logit model. As the results, over 91.2% interviewees have heard “the surrogate motherhood”, but 47.8% interviewees do not understand the government's legislation process. 64.9% interviewees have thought that the surrogate motherhood should be existed. Interviewees consider that the purpose of having the surrogate motherhood is to have a son to carry on the family name and the information gathering from the magazines and Internet has related significantly via chi-square test. The empirical results, via Logit model, in this paper are that the interviewees accept the surrogate motherhood before and after the legislation and population statistic and socioeconomic variables have positive or negative relation. After the legislation, the reasons of having the surrogate motherhood (the whole forecasted model P value is 0.000; Forecasted percentage 67 ﹪) are to have complete legislation regulation, proper management, and the surrogate motherhood is able to do if the government to guide the public to understand the process of the legislation correctly.