20世纪80年代中期至今,一些非出版单位和个人开始通过购买书号的方式得到某些出版社的出版物生产经营权。这种行为被称作“合作出版”。合作出版现象目前仍然存在,它产生的原因是:目前图书出版业特殊的准入制度、出版社在改制中面临的经营困境和不够完善的出版法律制度。 From the mid-1980s to the present, some non-publishing units and individuals began to acquire the publishing and production rights of certain publishing houses through the purchase of book numbers. This behavior is called “co-publishing”. The phenomenon of co-publishing still exists at present because of the special access system of book publishing industry, the operational difficulties faced by publishing houses in the system reform and the imperfect publishing legal system.