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This paper presents the physical design and preliminary beam measurement results of a Laue orientation-type neutron imaging device developed on the beam line 8A of the China Spallation Neutron Source (CSNS). The device is designed to meet the urgent demands of materials science, energy, and aerospace fields for multi-scale, in-situ, and non-destructive characterization of materials under extreme conditions, achieving correlated measurements from microcrystalline structures to macroscopic morphologies. The physical design adopts a forward-scattering transmission geometry, combining continuous wavelength neutron irradiation with a large-area scintillation screen-CCD imaging system, which can achieve the crystal orientation, unit cell parameters and quality evaluation of single crystal samples (such as lithium dendrites, SiC, GaN, etc.). The key design parameters include a wavelength range of 1.5 - 6.5 Å, a directional accuracy better than 0.5°, and a detector field of view of 20 cm×20 cm. To verify the design of the device, a comprehensive measurement of the neutron energy spectrum and flux of the beam line 8A was conducted using time-of-flight (TOF), current mode time-of-flight (CTOF), and gold activation methods. The results indicate that the shapes of the neutron energy spectra measured by the TOF and CTOF methods are consistent, with a characteristic wavelength of 2.62 Å, which is in good agreement with the theoretical value. The neutron flux measured by the gold activation method is 4.2E6 n/cm2/s@185kW, exceeding the acceptance criteria and successfully achieving the beam-on engineering goal. This research has completed the design of an in-situ integrated measurement device and conducted preliminary performance verification. It is expected to be fully constructed by the end of 2026, providing advanced technical means for in-situ research on the correlation between micro-scale features and macroscopic structures at multiple scales.