A high-voltage direct current relay arc baffle structure, comprising an insulating plate (1), a metal magnetically conductive clamp (2) forming an enclosing structure, and a yoke plate (3), the upper side of the yoke plate (3) being provided with a lower positioning plate (4) made of an insulating material, the insulating plate (1), the metal magnetically conductive clamp (2), the lower positioning plate (4), and the yoke plate (3) being fixed and forming a chamber for accommodating a dynamic contact point and a static contact point (7), the upper end of the metal magnetically conductive clamp (2) abutting the insulating plate (1), the lower end of the metal magnetically conductive clamp (2) abutting the lower positioning plate (4), the static contact point being fixed to the insulating plate (1) by means of a lead-out terminal (6), an upwardly extending lower positioning block being formed on the lower positioning plate (4), the metal magnetically conductive clamp (2) being sleeved around the periphery of the lower positioning block, two steel magnets (8) and at least two arc baffle plates (9) made of insulating material being arranged inside the chamber, the two steel magnets (8) being arranged opposite to one another, the arc baffle plates (9) being positioned in the direction of an arc blowout action of the steel magnets (8), and the steel magnets (8) and the arc baffle plates (9) all being fixed onto the lower positioning plate (4).