Objective To investigate the correlation between serum hypersensitive C-reactive protein(HS-CRP), lipoprotein-associated phospholipase A2(LP-PLA2) and senile essential hypertension(EH) complicated with type 2 diabetes mellitus (T2DM). Methods A total of 128 EH patients aged ≥60 years were selected as research subjects. According to whether T2DM was combined, the patients were divided into simple EH group (n=60) and EH+DM group (n=68). Patients with pure T2DM during the same period were selected as pure DM group (n=63) and healthy physical examinees as control group (n=61). The differences of FPG, HbA1c, hs-CRP, Lp-PLA2 in EH patients with T2DM in different hypertensive subgroups were analyzed. The differences of FPG, HbA1c, systolic blood pressure(SBP), diastolic blood pressure(DBP) in hs-CRP and Lp-PLA2 subgroups were analyzed. The correlation between hs-CRP, Lp-PLA2 and HbA1c, SBP and DBP was analyzed. Results In EH+DM group, EH group and DM group, LDL-C, hs-CRP and Lp-PLA2 were all higher than those in control group, while HDL-C was lower than that in control group (all P<0.05). In EH+DM patients, FPG, HbA1c, hs-CRP and Lp-PLA2 were all increased with the increase of hypertension level(all P<0.05). With the increase of hs-CRP level, FPG, HbA1c and SBP all increased (all P<0.05). With the increase of Lp-PLA2 level, both SBP and DBP increased (all P<0.05). Hs-CRP was positively correlated with HbA1c, SBP and DBP. Lp-PLA2 was positively correlated with HbA1c, SBP, and DBP.At the same time, HbA1c was positively correlated with SBP and DBP. After adjusting for age, gender, smoking history, body mass index(BMI) and triglyceride(TG), the elevated levels of hs-CRP and Lp-PLA2 were the risk factors for EH combined with T2DM (all P<0.05). Conclusion The levels of hs-CRP and Lp-PLA2 can predict the severity of EH combined with T2DM to a certain extent, and hs-CRP and Lp-PLA2 are risk factors of EH combined with T2DM, which can reflect the patients’ blood pressure, blood glucose control and hypertension classification.