The invention provides a hydrazine hydrate wastewater treatment device, and belongs to the technical field of wastewater or sewage treatment. The device comprises a raw water tank, a flocculent precipitate tank, a ceramic membrane filter, a nanofiltration filter and an active carbon filter, wherein a concentrated water pipe outlet of the nanofiltration filter is connected with the inlet of the rawwater tank; concentrated water is not discharged through overturn circulation and backflow circulation; the raw water tank, the flocculent precipitate tank, the ceramic membrane filter, the nanofiltration filter and the active carbon filter are all connected with a main drain. The invention further provides a treatment technology of the hydrazine hydrate wastewater treatment device. The hydrazinehydrate wastewater treatment device can solve negative effects, such as environmental pollution and ecological damage, by sewage of hydrazine hydrate factories, which is directly discharged, has goodsocial benefit, can further effectively solve key technical problem of hydrazine hydrate sewage treatment which restricts the development of hydrazine hydrate production enterprises, further expandsthe production capacity of the enterprises, saves energy, reduces environmental pollution, improves the labor productivity, improves the market competitiveness, and ensures that the enterprises becomeindustry leaders.