The sunn pest,Eurygaster integriceps Puton is a major invasive alien grain pest, listed as a quarantine pest for wheat imported from Kazakhstan into China. The pest is currently distributed in 38 countries across Asia, Europe, and Africa, primarily infestingTriticum aestivum,Hordeum vulgare, andSecale cereale, withoverwintering and oversummering hosts include Artemisia herba-alba and Astragalus (Tragacantha) spp. Both adults and nymphs damage host grains, resulting in yield reductions, decreased seed germination, and reduced flour processing quality.E. integriceps is univoltine, with an annual cycle comprising a damage phase (generally lasting 2.5-3.0 months), a summer dormancy and an overwintering diapause phases. After wheat harvest, adults migrate to higher altitudes or cooler areas for oversummering. Population dynamics and behaviors are influencedby ecological factors such as temperature, humidity, and altitude. Species identification can be based on adultmorphological characteristics and male genitalia structures, or through molecular methods such as polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Field monitoring primarily relies on sweep-net sampling of adults and nymphs, while grain damage assessment requires instrumental analysis, biochemical testing, andbaking quality evaluation. Current control strategies include plant quarantine, agricultural practices, chemical control, and biological control. However, critical aspects such as the pests origin , sources andpathways of introdction into China, damage potential, and detailedbiology and ecology remain unclear and require further research for effective management.