Abstract: Having summarily learned the chief merits of the same products at home and abroad, the technology of four-layer semi-ladder equipment for growing chicks was trialled and studied by combining the actual situation of semi-machanization or mainly on manual operation in our country. Designed in March, 1983, through initial trials and production tests, it was passed technical appraisal in Nov., 1984 and named 9LJTZ-4160 TYPE, Coop-raising Facility For Growing Chicks.At present, it has been adopted by a number of mid-sized, small-sized and specialized chicken raising households and has gained a stricking technical and economic benefits. In Dec., 1985, some experts was invited to appraise this achievement in scienttfic research. The experts considered that in terms of the structure and design, it was reasonable, high intensive feeding with good effects, saving construction cost and energy cxpenses. It was the first time that a new type raising-coop for growing chicks was passed the technical appraisal and has a high value in spreading and operation.