The utility model discloses a transformer of high stability overhauls operation with insulating ladder, include fixed horizontal pole down, down fixed horizontal pole rotary joint anti -slipping base is down run through through the pivot respectively in the both sides of fixed horizontal pole, and two balanced fixed pole settings of fixed surface installation on the fixed horizontal pole down, fixed mounting has the running -board between the fixed pole setting, and rotates through the pivot on the lateral wall of fixed pole setting and install the bracing piece, offered spacing hole on the lateral wall of bracing piece, and the inner chamber of bracing piece installs the telescopic link, install on the telescopic link with the spring catch of spacing hole looks adaptation, and the fixed joint of spring catch and spacing hole, the upper end fixed mounting of fixed pole setting has and goes up fixed horizontal pole, and the inner chamber of going up fixed horizontal pole is provided with the spout, the inner chamber both ends of spout are respectively through slip pin rod swing joint safety protection rubber belt, the both ends of safety protection rubber belt are provided with elasticity bayonet catch and draw -in groove respectively, and elasticity bayonet catch and the fixed joint of draw -in groove.