Pretreatment processes, process steps and techniques which are made in order to improve the hydrophilic characteristics and affinity for dyestuffs and finishing treatments of the fibres depend on the kind of fibre to be treated. However, these processes can be both harmful to the environment and to the fibre. Therefore, studies about the usage of enzymes in the pretreatment of protein based textile materials has increased. The enzymes are natural proteins so they can be easily and quickly biologically broken into pieces. By means of enzyme usage, the pretreatment processes become ecological and the natural properties of the product are kept. In this paper the enzymes used for pretreatment of the textile materials based on protein and improvements about these processes are explained by comparing them with conventional methods.