Abstract: Personal health record (PHR) is focused as a new research object in medical and health field, and the transmit security of PHR oriented to Web application is one of problem needed to be solved. First, this paper presents a PHR based on XML format. Then, for the reasons that PHR is based on crossplatforms, carries massive information and requires high transmit security, the paper uses XML encryption technology to encrypt the PHR in order to transmit it safely. It turns out that this encryption can not only guarantee the encryption efficiency, but also provide a good transmit security.
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Key words: XML encryption, PHR, crossplatforms, transmit security