Android系統的手機已經成為許多人日常生活中不可或缺的通訊與娛樂裝置。它以廣大開放原始碼資源的Linux為核心，以及完善的軟體堆疊框架。因此它被廣泛被移植至各個領域。然而通用化核心及完善龐大框架設計，使得開機速度變得緩慢。近年來所出品的智慧型手機或家電裝置都
有一共同缺點：關機時完全斷電後，重新啟動時間很長，因此關機時並不真正斷電而僅是進入待
機模式，在綠能時代的今天來看是有點浪費的。所以改善這些裝置的開機速度，就等於是節能減
碳。因此如何改善開機速度以達到良好的使用者體驗及降低能源的浪費，已經成各家廠商爭相研
究的一塊新興領域。本文分析了Android一般的開機流程，也介紹測量分析開機流程時間的方法，探討目前已發表之Android快速開機技術， 分析其優劣， 提供給未來想研究Android快速開機技術的同好參考。

Android phone systems have become an integral part of many people. It has vast resources of the open source Linux as the kernel, and comprehensive open source framework. Therefore, it is widely transplanted in various fields. However, a large common framework and generic kernel makes the boot speed become slow. In recent years, smart phone or home appliance devices have a common drawback: power is off after shutdown and restart time is very long. Therefore, it only shuts down into standby mode. So to improve the boot-up speed of these devices would be tantamount to reduce carbon emissions. How to improve the boot-up speed to achieve a good user experience and reduce energy waste has become a piece of the emerging field, which various manufacturers compete with one another.This paper analyzes general Android’s boot process, introduces the measurement and analysis methods of published fast-boot technology, and evaluates the strengths and weaknesses.