Trusted　computing　has　effectively　solved　the　bottleneck　problem　of　the　traditional　security　technology,　and　it　has　become　an　important　research　area　of　the　information　security.　Trusted　cryptography　module　(TCM)　is　a　must-have　core　module　of　cryptographic　support　platform　for　trusted　computing,　providing　independent　cryptographic　algorithms.　There　are　a　great　many　of　keys　being　managed　in　TCM,　and　TCM　uses　these　keys　to　carry　out　its　various　functions.　Platform　Identification　Key　(PIK)　plays　an　important　role　in　the　attestation　to　platform,　platform　integrity　measurement　and　platform　reporting　process.　In　consequence,　the　security　of　PIK　is　directly　related　to　the　trusted　platform　security.　By　presenting　the　generation　process　of　PIK　in　TCM,　analyzing　the　advantages　of　the　process,　this　paper　posted　corresponding　solutions　to　the　possible　security　risk　in　the　process　of　PIK　generation.　It　has　effectively　improved　the　safety　of　PIK　generation　process,　greatly　reduced　the　risk　of　exposure　to　private　information.