As consumers are shifting away from the traditional marketing campaign, companies need different marketing campaign to continue to differentiate themselves from other companies. One of the latest marketing trends is guerrilla marketing. Guerrilla marketing is a type of marketing campaign that uses unique, extreme and eye-catching to attract more customers. This article is to explore guerrilla marketing and how it became a successful business model for Xiaomi. Besides that, Word-of-Mouth will also be explored and how it becomes an important element in guerrilla marketing. This article will increase the understanding of guerrilla marketing and how Xiaomi utilize it.