PIIP3D is a new 3D photoacoustic imaging system launched by TsingPAI Technology, which can be combined with PIIP or CPIIP mainframe to achieve isotropic 3D photoacoustic imaging, and can output 3D images close to the level of 7T MRI with a resolution of 100-150 microns.It can be used for animal brain imaging research, high resolution imaging of isolated tissues, in vivo 3D imaging of mice, and 3D imaging of certain localised tissues in the human body.