The utility model relates to a be applied to small -size ceramic oil charge formula insulation support of transformer belongs to electrical equipment field technical field. Technical scheme is: contain sleeve pipe binding post (1), excessive joint (2), sealing washer (3) of lead wire, pressure -equalizing device (4), ceramic protective housing (5), electrically conductive copper pole (6), insulated paper (7), raise aluminum alloy flange (8), batch oil tank (9), oil level detector (10), oil paper electric capacity core (11), pressure -equalizing device (4), ceramic protective housing (5), raising aluminum alloy flange (8) and batch oil tank (9) and being hollow structure, the central axis is last to be equipped with electrically conductive copper pole (four to six -tenehs), and the outer surface coating of electrically conductive copper pole (four to six -tenehs) insulated paper (7). The beneficial effect of the utility model: simple structure, reasonable in design fits, the electrical strength and the sufficient mechanical strength that have the regulation, the appearance is little moreover, the quality is little, sealing performance is good, the commonality is strong, the maintenance of being convenient for, is fit for the application and promotes.