The invention discloses an AR virtual and real accurate shielding method based on HoloLens, and relates to the field of augmented reality, and the method comprises the following steps: S10, selectinga real object; S20, modeling the real object in three-dimensional modeling software, adding a visible material, and storing the generated model in a format which can be imported into a Unity 3D editor; S30, importing the model into a Unity 3D project; S40, custom message scripts, collaborative scripts and configuration scripts are compiled; S50, loading the script to an AR program Unity 3D project, and releasing the Unity 3D project to a HoloLens for operation; S60, the HoloLens engineering information is remotely configured in the Unity 3D engineering; And S70, remotely storing the configuredengineering. According to the method, the problem that the real world objects have gaps in AR virtual and real shielding is solved, and additional operations such as environment scanning are omitted.