The invention discloses a system and microorganism for producing taxadiene, and application of the system or the microorganism, and belongs to the field of synthetic biology. The system for producing the taxadiene comprises mevalonate pathway related genes or functional equivalents thereof, and taxadiene synthetized related genes or functional equivalents thereof. The mevalonate pathway related genes are selected from atoB and idi of escherichia coli BL21, and erg13, thmg1, erg12, erg8, and mvd1 of brewer's yeast INVSC1; gene nucleotide sequences of the taxadiene synthetized related genes ggpps are shown by SEQID No.1 and SEQID No.2. The microorganism for producing the taxadiene is the microorganism containing the system for producing the taxadiene, by applying the system into the microorganism, the microorganism for producing the taxadiene is obtained. The microorganism produced in the invention can produce culture for the taxadiene stably, lays a foundation for further using the microorganism to produce paclitaxel, and has a wide application prospect.