The invention discloses a seat cushion sliding type relation regulation sofa and relates to the technical field of articles for daily use. The seat cushion sliding type relation regulation sofa comprises a sofa body, wherein the sofa body comprises a backrest, an armrest, a seat cushion, a foot cushion and a fixed cushion, wherein one end of the armrest is fixedly connected with the lower side ofone end of the backrest; one end of the seat cushion is fixedly connected with a west side of one end of the backrest; the lower end of the armrest is fixedly connected with the upper end of the seatcushion. According to the seat cushion sliding type relation regulation sofa disclosed by the invention, on one hand, a second sliding groove is located in the seat cushion and a second sliding blockis located in the second sliding groove, so that the fixed cushion drives the foot cushion to slide in the seat cushion; the foot cushion slides in the seat cushion, so that the rest of other people on the sofa is not influenced when the foot cushion is moved; on the other hand, when the foot cushion is not used, the foot cushion can slide to the lower side of the seat cushion to be collected, sothat the space is saved and ash does not fall down to the upper side of the foot cushion at the same time; secondly, two third sliding blocks are arranged so that the sliding of the second sliding block is more stable and the second sliding block is not easily clamped in a sliding process.