Various types of pollutants are present in wastewater discharges form coke industry, but cyanide and phenol are considered as most dangerous pollutants among all. Due to the utilization of natural sources, the phytoremediation is considered as a low cost method which utilizes natural sources. In the current research, Co-removal of cyanide and phenol from waste water was done by E. Crassipes (Water Hyacinth) and Zea Mays (Maize) plants with the application of the phytoremediation method. The toxicity measurement of cyanide and phenol to the plants was determined with the help of Normalized relative transpiration, Biomass growth, change in length of stem and root. The percentage removal of cyanide and phenol was determined at different concentration of cyanide and phenol.