Along with the rapid development of informatization, people habitually rely on electronic devices. For the convenience and efficiency provided by various devices, people could dispose almost everything by their phones and PC. In this respect, the security of the electronic devices that people use in daily life becomes much more important. In this area, exerts has tried many ways to keep data and uses safe from attacks. This paper has designed a Voice Based Biometric Security System, which is able to reinforce the security level of the target device. With its help, the electronic devices will be more security.