The utility model relates to a X ray standard detecting system, include: X ray generating device, the X ray that produces horizontal outgoing is restrainted, the baffle, the utensil is by the diaphragm, the shutter is including baffle and the mobilizable anti -dazzling screen that has the through -hole, the center that the center of through -hole, the center of diaphragm, X ray were restrainted is on same straight line, filter equipment is including the two sets of filtering carousels that use the through -hole to set up for central symmetry, every group filtering carousel includes a N optical filtering hole, presss from both sides in the optical filtering hole and is equipped with the light filter, when the filtering carousel is rotatory, have two optical filtering holes to aim at mutually with through -hole location simultaneously in proper order along the rotation direction, make the X ray restraint by light filter in the optical filtering hole filters later again by the through -hole outgoing, the guide rail platform includes: the guide rail of shu fangxiang setting and the measurement examination platform that moves in the guide rail coparallel are restrainted by parallel X ray, adjust measurement examination platform, the messenger places in the central center of restrainting with the X ray of measuring the quarantine objects on examining and determine the platform coincidently mutually.