基于拇指操作的键盘输入在当前以及未来都将作为一种不可替代的文本输入模式应用在手机上,因此,手机键盘文本输入效率的高低成为了衡量手机可用性水平的重要标志之一。从手机键盘文本输入法的改进研究、中文文本输入法的研究、模型预测与评价等多个角度归纳了国内外有关手机键盘文本输入法的研究动态,在此基础上,指出了目前研究存在以下不足：基于西方文字设计的手机键盘不适合中文输入;新的中文输入法在应用上存在诸多不足;大多数手机的键盘改进没有考虑用户的操作特点。并提出了今后的研究发展方向：根据用户操作特征以及中文输入特点来优化现有中文手机键盘的设计,对提高中文文本输入绩效,具有很高的应用价值和较强的可操作性。

Keypad input based on thumb operation in the present as well as in the future will be irreplaceably used as an input mode in mobiles. Therefore the efficiency of mobile keypad text input has become one of important symbols weighting the level of mobile's usability. The paper concluded the studying developments of mobile keypad text input from different aspects such as improved study on mobile keypad text input, study on Chinese mobile keypad text input and model predict and evaluation. Based on the conclusions, the deficiencies of the present studies are pointed out as follows: the designed mobile keypads based on western languages are unfit for Chinese text input; there are many applying shortages in new Chinese text input method; users' opperating characteristics are not considered in many improved designs of mobile keypad. In the end, the future studying directions are brought out: Chinese mobile keypad can be omptimized according to the characteristics of users' operation and Chinese text input.It has very high applied value and considerable opperability so as to improve opperating performance of Chinese text input.