With the popularization of the wireless network, and the progress of mobile computing technology, the efficiency of the hand-held device is better, and its applications are wider. Combining hand-held device and E-learning will be the main learning method in the future. This research employs wireless network, hand-held device, and RFID to build Context-Aware Writing System (C-Writing for short) in ubiquitous learning environments. After the learner using the C-Writing in the ubiquitous learning environment actually, we evaluate the result of learning by their works with/without C-Writing. We use the questionnaire to evaluate the learning situations; here the questionnaire contains the content of the users’ attitudes, system acceptance, system quality, content quality, and interactive with environment. The result of research shows most of the students approve this system’s benefit, and he/she is willing to use similar system in the future. Learners can efficient improve learning performance and attract attention of learners through this system.