Abstract: Bamboo is a kind of natural composite material, which is composed of bamboo fiber as reinforcement and porous lignin as matrix. In this paper, based on the microstructure of bamboo, the porous polyethersulfone (PES) matrix with gradient pore size distribution was deposited on the surface of glass fiber (GF) by immersion precipitation phase transformation method of high-performance thermoplastic polymer. The bamboo like porous polyethersulfone matrix monofilament glass fiber composite(GF/PES) was prepared, and its microstructure, tensile mechanical properties and “temperature modulus” response were studied. Based on the good energy absorption of the gradient porous PES matrix and its repair effect on the micro defects on the surface of GF, the tensile strength and elongation at break of GF/PES can be increased by 39.11% and 58.1%, respectively. In addition, the porous polymer matrix also can be used as carrier of various functional materials. For example, filling water in pores of porous PES can make a significant modulus change of GF/PES. Therefore, “temperature-modulus” intelligent response composite are obtained.