The invention discloses a multifunctional herringbone ladder. The multifunctional herringbone ladder comprises a first ladder climbing component and a second ladder climbing component. The multifunctional herringbone ladder is characterized in that a first connecting piece and a second connecting piece are respectively fixed on two sides of the upper end of the first ladder climbing component; a third connecting piece and a fourth connecting piece are respectively fixed on two sides of the upper end of the second ladder climbing component; the first connecting piece is hinged with the third connecting piece through a first pin shaft; the second connecting piece is hinged with the fourth connecting piece through a second pin shaft; the pedal components are arranged on the tops of the first ladder climbing component and the second ladder climbing component; buckling components are hinged to the first connecting piece and the second connecting piece; clamping grooves for clamping the buckling components are formed in the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece. The multifunctional herringbone ladder can serve as a straight ladder and a stretcher and is firm in structure, steady in work and good in safety performance.