A linear support structure for supporting a drive shaft that performs reciprocating linear motion along its longitudinal axis in an electric cleaning care appliance, the electric cleaning care appliance comprising a stationary upper device housing, a stationary lower device housing, at least a part of the drive shaft is located in the stationary lower device housing, under the action of drive force, the drive shaft reciprocates relative to the stationary lower device housing along its longitudinal axis, a head driven by the drive shaft (10, 40) is also provided in the stationary upper device housing, the transverse axis of the head is perpendicular to the longitudinal axis of the drive shaft, wherein the linear support structure for supporting the drive shaft (10, 40) is to be provided in the stationary lower device housing, wherein the linear support structure comprises an inner fixing ring, at least one elastic member and an outer fixing ring, wherein the inner fixing ring is to be fastened on the drive shaft along a circumferential direction of the drive shaft, and the outer fixing ring is to be directly or indirectly fastened on an inner wall of the stationary lower device housing, wherein the elastic member has the performance of a spring and is distributed between the outer fixing ring and the inner fixing ring, an outer end of the elastic member is fixedly coupled to the outer fixing rings, an inner end of the elastic member is fixedly coupled to the inner fixing ring wherein the dimensions of the elastic member on the cross section perpendicular to the radial direction of the driveshaft along the direction perpendicular to the drive force is set as the width and along the direction parallel to the drive force is set as the thickness wherein the width is greater than three times the thickness wherein the length of the elastic member along the radial direction of the drive shaft is greater than three times the thickness of the elastic member wherein the circumferential bending deformation section coefficient of the elastic member corresponds to the generated bending deformation of the elastic member when subjected to a force along the circumferential tangential direction of the drive shaft, and the axial bending deformation section coefficient of the elastic member correspond to the generated bending deformation of the elastic member when subjected to a force parallel to the longitudinal axis of the drive shaft, the axial bending deformation section coefficient being less than one-ninth of the circumferential bending deformation section coefficient (Iz2<1/9 Iz1). wherein the linear support structure for supporting the drive shaft (10, 40) is to be provided in the stationary lower device housing, wherein the linear support structure comprises an inner fixing ring, at least one elastic member and an outer fixing ring, wherein the inner fixing ring is to be fastened on the drive shaft along a circumferential direction of the drive shaft, and the outer fixing ring is to be directly or indirectly fastened on an inner wall of the stationary lower device housing, wherein the elastic member has the performance of a spring and is distributed between the outer fixing ring and the inner fixing ring, an outer end of the elastic member is fixedly coupled to the outer fixing rings, an inner end of the elastic member is fixedly coupled to the inner fixing ring wherein the dimensions of the elastic member on the cross section perpendicular to the radial direction of the driveshaft along the direction perpendicular to the drive force is set as the width and along the direction parallel to the drive force is set as the thickness wherein the width is greater than three times the thickness wherein the length of the elastic member along the radial direction of the drive shaft is greater than three times the thickness of the elastic member wherein the circumferential bending deformation section coefficient of the elastic member corresponds to the generated bending deformation of the elastic member when subjected to a force along the circumferential tangential direction of the drive shaft, and the axial bending deformation section coefficient of the elastic member correspond to the generated bending deformation of the elastic member when subjected to a force parallel to the longitudinal axis of the drive shaft, the axial bending deformation section coefficient being less than one-ninth of the circumferential bending deformation section coefficient (Iz2<1/9 Iz1).