The sensor node deployment is either deterministic or self-organizing. This paper studies node deployment of heterogeneous wireless sensor networks, which consists of two types of nodes: one is advanced nodes, the other is normal nodes. It also analyzes the two types of sensor's energy consumption, and a maximizing lifetime model is proposed, which satisfies connectivity and coverage conditions. The proportion between two types nodes is calculated, and a new node deployment algorithm for heterogeneous wireless sensor networks is proposed.