Objective To analyze the distribution bio-relationship of loci related antihypertensive drug efficacy in patients with essential hypertension(EH)in Guiyang region to support the development of clinical guidance for in-dividualized medication of hypertension patients in this region.Methods A total of 406 EH patients who visited the Cardiology Department of Guiyang Hospital from December 2020 to December 2021 were collected as the study sub-jects and ligase sequencing method was applied to detect 7 gene loci of antihypertensive drugs.The distribution of gene loci in EH patients of different genders and from different geographic regions was evaluated.Results The mu-tation frequencies of the seven genes,CYP2D6*10(c.100 C＞T),CYP2C9*3(c.1075 A＞C),ADRB1(c.1165 G＞C),AGTR1(c.1166 A＞C),ACE(I/D),NPPA(T2238C)and CYP3A5*3(A6986G)were 47.29%,5.91%,73.15%,6.65%,34.24%,0.49%,and 69.70%respectively;There was no significant difference in distribution frequency of hypertension drug related gene polymorphisms among different genders.Conclusions The distribution frequency of alleles in 7 antihypertensive drug efficacy related loci is not related to gender of patients.EH patients in Guiyang region are more sensitive to β-blockers and calcium antagonists,but less sensitive to other types of antihypertensive drugs.Therefore,the dose administered should be adjusted appropriately when using β-blockers and calcium antagonists.