The invention relates to an inducible type promoter, and further relates to an expression vector containing the inducible type promoter and application of the inducible type promoter in regulating the expression of a target gene. The inducible type promoter has a function of starting the expression of a downstream structural protein gene under an induction condition. A technical support is provided to utilize the inducible expression mechanism of the promoter to improve the synthesis expression amount of aquilaria sinensis sesquiterpenes, and understand the mechanism related to trauma inducible expression of an aquilaria sinensis sesquiterpenes synthase gene.