As the text document is widely and frequently used in the communication, the textbased information hiding technology is still an important topic in computer security. However, the current text-based information hiding techniques are suffered from some problems, such as poor robustness, lower embedding rate and lower efficiency. Aiming at these problems, this paper proposes a novel secret information hiding framework by integrating of the hash function and the invisible ASCII character replacement technology. Under this framework, the encoded secret information is firstly divided into groups with even number of “1”. Secondly, the SPs (space characters) in each carrier segment are replaced with SOH (start of head) by our replacement algorithm. Thirdly, the replaced segment is processed by hash function. Finally, the information hiding process is completed by comparing the generated hash values with the encoded secret information. Furthermore, by uti-lizing the hash collisions of the previous segments, the framework is improved to enhance the security and the embedding rate. The experimental results have demonstrated that the proposed framework holds high em-bedding rate, strong robustness and high efficiency.