Abstract: Objective: To investigate the clinical value of combined use of magnetic resonance imaging (MRI) and diffusion weighted imaging (DWI) in the diagnosis of pregnancy-induced hypertension. Methods：Thirty-one patients with gestational hypertension syndrome who were admitted from January 2015 to 2017 to December 2015 were selected for observation. All patients developed posterior reversible encephalopathy syndrome and were diagnosed by magnetic resonance imaging and diffusion-weighted imaging. The imaging results were observed. Results: The lesions on the first lesion were mainly composed of bilateral frontal occipital cortex, subcortical white matter, cerebellar hemisphere and lateral ventricle. The DIW diagram now presents equal signals or low signals, equal signals, and high signals. Most of the T1W2 lesions showed high signal. T1W1 appears as equal or slightly lower signal on the lesion. After termination of pregnancy, blood pressure and other treatment measures have been effectively rescued patients. Conclusion: The use of nuclear magnetic resonance angiography for the diagnosis of gestational hypertension can provide a reliable basis for clinical intervention as soon as possible. The diagnostic value is outstanding and worthy of clinical promotion