This utility model relates to the field of vehicle parts technology, and in particular to a vehicle-mounted PCBA sealing structure and a vehicle. The vehicle-mounted PCBA sealing structure includes: a PCBA component comprising a PCB board and electronic components mounted on the PCB board; a limiting member formed as a frame structure surrounding the circumferential edge of the PCB board, the inner wall of the limiting member being in contact with the PCB board, such that the inner wall of the limiting member and the PCB board form a glue injection cavity, the depth of which is greater than the height of the electronic components in the thickness direction of the PCB board; and
sealant, filling the glue injection cavity to form a sealing layer on the surface of the PCB board, the shape of which is the same as the shape of the PCB board, and the thickness of which is greater than the height of the electronic components. This utility model can achieve sealing of all electronic components on the PCB board, effectively preventing dust,
moisture, oxides, or corrosive substances from corroding the electronic components, and also has a reliable cooling and heat dissipation effect.