Based on the linear variable filter (LVF), a compact multispectral imaging spectrometer is designed. With a wide LVF working spectral range of 600~1100 nm, a wide spectral range scanning multispectral imaging spectrometer objective is designed, and the total length of the objective is shorter than 85 mm; its distortion is less than 0.01%; the modulation transfer function is better than 0.7 for the various wavebands in full field of view at the Nyquist frequency; the spatial angular resolution reaches 1.02'. The device can get a quasi-monochromatic image and the reflectance spectra of the target by scanning and image reconstruction. The experimental results show that the spectral resolution matches the spectral bandwidth of the LVF, indicating the resolution of 9 nm at 600 nm. By the tomato maturity identification experiments, the imaging performance of the spectrometer is verified.