bjective To evaluate the dynamic enhanced magnetic resonance angiography and spiral CT angiography in the diagnosis value of renal artery stenosis. Methods 42 cases of patients with clinical suspicion of renal artery stenosis and dynamic enhanced magnetic resonance angiography scan and spiral CT angiography scan. Is the result of two methods will scan a double renal artery reconstruction after comparison, evaluation. Results 84 cases of dynamic enhanced magnetic resonance angiography showed 54 cases of renal arteries were diagnosed as renal artery stenosis, and 42 cases of patients with clinical suspicion of renal artery stenosis with spiral CT angiography scan, according to the results of 52 cases of blood vessels were diagnosed as renal artery stenosis. The two methods has good consistency. Conclusion Dynamic enhanced magnetic resonance angiography and spiral CT angiography can more accurate diagnosis of renal artery stenosis symptom, spiral CT angiography in sensitivity, specific values and accurate values are slightly higher than the dynamic enhanced magnetic resonance angiography, but dynamic enhanced magnetic resonance angiography way more secure.