PURPOSE: To obtain a netlike structure having different densities suitable for a cushioning material having excellent heat resistance, permanence and cushioning properties, hardly getting stuffy.

CONSTITUTION: In a netlike structure, threads comprising a thermoplastic elastic material are bent and brought into contact with each other, most of the contact parts are fusion bonded to form a three-dimensional structure and plural layers having at least ≥0.005g/cm3 difference in apparent density are integrated. In the method for producing the netlike structure, the thermoplastic elastic resin in a melt state is extruded downward at ≥10°C and ≤80°C higher than the melting point from an orifice of a nozzle having at least plural arrangements different in line intervals or pitches between holes in a section in the longer direction, threads are brought into contact with each other in a melt state, fusion bonded with forming a three-dimensional structure, held by a take-up device and cooled by a cooling bath to form the netlike structure by one process.