RESUMEN
Objective To analyse the suffer′excrescent circumstance in chromosome who are primary amenorrhea or secondary amenorrhea and inquiry its clinical meaning .Methods Take out patients′peypheyal vein blood to cultuve ,the chromosome was pre‐pared ,G band was analysed .Results primary amenorrhea or secondary amenorrhea suffer totally 225 ,there were 63 with chromo‐som abnormal karyotyptes which occupies 28% ;Among 148 the patiens of primary amenorrhea ,chromosom abnormal karyotyptes were 55 examples which occupies 37 .16% ,secondary amenorrhea is 77 examples ,chromosom abnormal karyotyptes were 8 exam‐ples which occupies 10 .39% .Conclusion Chromosome abnormals are the main cause of primary amenorrhea and secondary amen‐orrhea .in patients with chromosom analyse ,to kncw the cause of amenorrhea ,early symptomatic treatment is important .