A wheel device having a non-pneumatic tire and comprising a rim, said non-pneumatic tire comprising a tire member and a securing fastener, said tire member comprising an inner ring of the tire member provided with a mounting protrusion and fixing notches for fixing the tire member on said rim, wherein the fixing notches are respectively provided at two sides of where the mounting protrusion joins the tire member, wherein an inner ring of the mounting protrusion is provided with a position fixing groove, wherein the position fixing groove is an arc-shaped structure, wherein 4 to 100 pieces of arc-structured position fixing grooves are uniformly arranged on the inner ring of the mounting protrusion in a circumferential direction; wherein a plurality of fixing holes are respectively disposed below the fixing notches on two side walls of the position fixing groove, the fixing holes passing through the side walls of the position fixing groove, and an outer side of the fixing holes partially coincides with the fixing notches; wherein the securing fastener is an arc structure, and a plurality of arc-structured securing fasteners form an intermittent ring; an edge of the securing fastener has a support portion and two position fixing portions, an inner ring of the securing fastener is a protruding blocking portion, said edge of the support portion is adapted to fit the position fixing groove, the two position fixing portions are respectively located on both sides of the support portion, the position fixing portions are adapted to fit the fixing holes; said inner ring of the blocking portion is adapted to fit a position fixing block or a protruded spoke head on said inner side of a rim; wherein the securing fastener is disposed in said position fixing groove, an edge of said support portion abuts against an inner wall of the position fixing groove, and said two position fixing portions respectively pass through and are disposed in the fixing holes; wherein an edge of the rim is fitted to said fixing notch, wherein said position fixing portions pass through an outer portion of said fixing holes and are engaged with said edge of the rim, and said inner ring of said blocking portion is engaged with a position fixing block or a protruded spoke head on an inner side of the rim; wherein a cross section of said securing fastener is U-shaped, and there are two support portions, the two support portions are respectively disposed on two upper ends of the U-shaped securing fastener, said blocking portion is provided at the bottom of the U-shaped securing fastener; alternatively, the cross section of the securing fastener is W-shaped, and there are two support portions, the two support portions are respectively provided at two upper ends of the W-shaped securing fastener and the blocking portion is a stopper provided at the bottom of the W-shaped securing fastener; alternatively, the cross section of the securing fastener is W-shaped, and there are three support portions, the three support portions are respectively provided at two upper ends and middle upper ends of the W-shaped securing fastener, and the position fixing portions are respectively located on both sides of the support portions of the two upper ends, the blocking portion is a stopper provided at the bottom of the W-shaped securing fastener; alternatively, the cross-section of the securing fastener is V-shaped, and there are two support portions, the two support portions are respectively disposed on the two upper ends of the V-shaped securing fastener, and the blocking portion is a stopper provided at the bottom of the V-shaped securing fastener; wherein the blocking portion is configured in a continuous manner or an intermittent manner, the height thereof is from 1 to 30 mm, and the thickness of the intermittent blocking portion is from 1 to 10 mm.