Because the physical and emotional state of the pregnant mother can affect the fetus, the surrogacy contract may place restrictions on the surrogate mother during the pregnancy, such as not allowing her to smoke, drink alcohol, take drugs and so on.
由於孕母身心的情況會影響胎兒，因此，代理孕母在代孕過程中可能需受契約限制。例如：不得抽煙、喝酒、吸毒… … 等等。