background: compared with common 2d calorimeters, 3d imaging calorimeters have higher geometric acceptance and better background rejection performance for space particle physics experiments but they also have a large number of readout channels with more complicated electronics. the advantages of small size, low power consumption, low heat and high integration makes the image intensified charge-coupled device (iccd) preferable to some traditional photoelectric devices like photomultiplier tube (pmt). purpose: this study aims to investigate the feasibility of iccd readout for a 3d imaging calorimeter. methods: a 3d imaging calorimeter prototype with 250 channels and readout for an iccd has been designed. laser diodes were used as light sources to measure the linearity, light intensity resolution and crosstalk performance of the iccd. the 10-gev electron beam of the super proton synchrotron at the european organization for nuclear research (cern-sps) was employed to measure the response of the calorimeter and reconstruct the calorimetry. results: experimental result of 10-gev electron beam test shows the energy of incident particle can be reconstructed from iccd image correctly. conclusion: the performance of iccd with appropriate readout electronics can meet the requirements for a 3d imaging calorimeter.