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Because of its Invisibility and ultra-low temperature characteristics(4k)，Cryomodule is the emphasis and difficulty of superconducting linac accelerator．This paper presents the alignment and monitoring of cryomodule．The author introduced，calculated and measured the vacuum and cry-deformation and displacement．As the heat conduction and expansion coefficient are both smaller，fiber glass G11 was chose as cry-monitoring target after simulated calculation．The new solutions adopted is collaborative alignment based on multi-laser tracker or portable coordinate measurement machine．The collaborative data shows a good agreement with previous．As the deformation and displacement is beyond the telescope range(±1.2mm)，the dial indicator is used to reduce the error to 0.01mm．The above improvement greatly perfect the efficiency of collimating installation and the accuracy of low temperature monitoring， guarantee the success of 10 MeV CW proton beam.
