Inclusion Criteria:  ●≥18 years old and ≤75 years old, male or unpregnant female  Untreated and unruptured intracranial wide-necked aneurysm confirmed by preoperative imaging diagnosis (wide-necked aneurysm was defined as the tumor neck ≥4mm or the tumor body/tumor neck ratio <2) The target aneurysm is planned to be treated with blood flow guidance device only, without the need to complete the treatment by stages The width of tumor neck should be less than 30mm Imaging measurements of the tumor parent artery showed that the diameter was 1.5mm ~ 6.5mm The subject or legal guardian can understand the purpose of the study, demonstrate sufficient compliance with the study protocol, and sign the informed consent  Exclusion Criteria:  The target aneurysm has previously received craniotomy clipping or other endovascular interventional treatment Target aneurysms were haemacular aneurysms, pseudoaneurysms, arteriovenous malformations and moyamoya disease related aneurysms DSA suggested vascular path tortuosity or severe arteriosclerosis, and it was difficult for the instrument to reach the target vessel Contraindications to dual antiplatelet therapy and anticoagulation therapy Patients with known clear allergy to nickel-titanium alloys and platinum-tungsten alloys People with known severe allergy to contrast media (excluding rash) patients with known dementia or mental illness Preoperative complicated with serious heart, liver, kidney, respiratory system diseases and bleeding disorders Life expectancy is less than one year Is participating in, or may participate in, any other drug or medical device clinical trial after inclusion in this clinical trial Other conditions determined by the investigator to be unsuitable for participation in this clinical trial