Mobile intelligent terminal platform combines telephone communication, social contact, online shopping and many other functions in one, the destruction of related services by malicious software could undermine the safety of personal privacy and property. Remote attestation, which is a core function of trusted computing, provides a scheme to allow mobile intelligent terminal to assure the secure running state to remote service provider. Traditional remote attestation model is mainly used in computer platform, which is unable to adapt to the environment of smart device where software updates frequently and works with many different service running together. To address on these issues, this paper presents a new behavior-based attestation model for smart device. Way from software developers to define behavior limitation, OS to enforce the limitation, service provider to custom strategy to attest smart device, successfully meets the requirement that corresponds service and should run in a secure environment. The implementation and evaluation of the model prototype shows that the model has strong security capabilities as well as efficiency.