To provide a more highly functionalized connection type mat, for example, with an improved anti-slipping function.SOLUTION: Connection type mats 10, 20, 30, 40, 50 are formed to allow variation of a laying form by varying the number of the connected mats or arrangement. The connection type mats 10, 20, 30, 40, 50 are formed to have multiple connection holes α penetrating through the connection type mats 10, 20, 30, 40, 50 in a thickness direction, and multiple connection projections β projecting from one side of the thickness direction of the connection type mats 10, 20, 30, 40, 50 that are provided at a regular interval. Cross-sectional shapes of the connection holes α and the connection projections β are formed to be substantially identical, and a height of the connection projections β is set to be larger than a depth of the connection holes α.SELECTED DRAWING: Figure 7