Indoor floor finishing materials and floor construction method using the finishing materials

The present invention relates to an indoor floor finish that can prevent floor noise in a residential space where floor noise is expected， such as an officetel， an apartment， or a multi-family house， and to finish the interior floor， and to a floor construction method using the finish. It has a length， and the left and right bottom edge has a polygonal panel 10 having a mounting end portion 11 is formed in the longitudinal direction， and the seating end portion in the longitudinal direction on the left and right sides so that the panel 10 can be mounted. 21 is formed and comprises a support belt 20 having a shock-absorbing function， the support belt is used for connection with the edge support belt (20a) formed in only one seating end (21) Consists of the connecting support belt 20b.