The invention is a process for dip-painting a semi-enveloped 10KV-level high voltage coil and comprising the steps of: taking off the cover of a dip-painting tank, stably and vertically lifting the qualified coil into a lining tank, and putting on and fastening the cover; vacuumizing to 100 Pa below; transporting the dipping paint from a storage tank into the dip-painting tank; as vacuumizing to 600 Pa, closing the vacuumizing button; as pressurizing to 0.55 MPa, closing the pressurizing button; closing the vacuumizing button; as pressurizing to 0.55 MPa, closing the pressurizing button; closing the vacuumizing button; as pressurizing to 0.55 MPa, closing the pressurizing button; depressurizing to 0.2 MPa; opening and closing the paint transporting value; pushing the coil into an oven andwaiting until curing. The advantages: it can fill solvent-free insulating dipping paint in the SCRB10 semi- enveloped high voltage coil, so as to achieve the effect of low local discharge, even no local discharge.