With the rapid development of deep space exploration，satellite navigation and satellite remote sensing technology, higher data processing rate and stronger anti-interference performance are required in space communication. Therefore，communication with higher frequency spectrum utilization and stronger anti-interference will be the brilliantly prominent consideration in the future space environment. In this paper，the restriction factors on the performance when transmitting data are analyzed firstly, then the principle，the performance and application of new modulation and coding technology are explained in detail. Finally，a scheme that combines novel modulation and coding technology is proposed under complex electromagnetic environment. By analysis，it is shown that the combined scheme can improve the spectrum utilization and anti-interference performance.