At the present, we campaign to use the natural materials to replace the synthetic material. This work focused on the use of the preparation of the polymer composite from agricultural waste materials, such as natural cellulose fiber from sugarcane fiber (SF), coconut fiber (CF) and rubber seed shells (HF) and poly(vinyl alcohol) (PVA) by using crosslinker from the degradation of polyethylene terephthalate (PET) waste (namely DTA). Firstly, the PVA was mixed with DTA at 70oC for 30 min to form as a cross linker (namely PVAD). This composite was compressed by compression machine at 100 oC for 10 min. The influence of PVAD, NR, K2S2O8 and ratio of cellulose on the physical properties of the polymer were investigated. Results show that the impact strength and elongation at break of this specimen were enhanced by the addition of PVAD and natural rubber (NR). But the swelling ratio in water of this composite was decreased as a function of PVAD content. This is due to the adhesion between PVAD and cellulose fiber and it was confirmed by SEM. Moreover, the swelling ratio of this composite was improved by the addition of NR. In case of K2S2O8, the good in water resistance of the polymer composite was found to be at K2S2O8 0.016%w/w. However, when the amount of the K2S2O8 was > 0.016% w/w, the tensile strength and impact strength of this sample was decreased. The flame retardant of the polymer composite was improved by the addition of borax at……... The optimal condition of the mixture cellulose fiber in composite was found at 30:10:20 SF:CF:HF by weight. Moreover, the biodegradable of the polymer composite easily degraded in nature. In near future, it will be applied in the artificial wood