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. <EOS>