A multifunctional insulated insulator cradle with an adjustable length is characterized by comprising a wire end clamp, a hanging piece, a main insulator cradle body, an adjustable insulator cradle body and a threaded connection rod, wherein the hanging piece is fixedly connected to the right end of the main insulator cradle body and the wire end clamp is connected with the hanging piece; the right end of the adjustable insulator cradle body is inserted into the left end of the main insulator cradle body, the insertion thickness is adjustable, and the right end of the adjustable insulator cradle body is positioned through a through hole and a pin on the adjustable insulator cradle body; the left end of the adjustable insulator cradle body is connected with the threaded connection rod. The multifunctional insulated insulator cradle with the adjustable length has the advantages that the length is adjustable, the multifunctional insulated insulator cradle can satisfy the requirement for replacement of insulator chains with insulator sheets in different numbers and can replace a plurality of original insulator cradles of different lengths, the management and storage difficulty of insulation tools is lowered, the multifunctional insulated insulator cradle is detachable and is easy to assemble, vehicle transportation and manual carrying are facilitated, an end fixing and hanging device is additionally arranged so that the multifunctional insulated insulator cradle can be converted into an insulated horizontal ladder, and therefore an operator can enter a highfield and exit from the highfield.