Our tower crane is a fixed, self-elevating, and attached tower crane. In addition to its advanced parameters, reliable performance, well-looking appearance, and excellent quality, it has characteristics such as long boom, larger working coverage, hydraulic rising, and tandem mounted tower body. Its design idea shows advantages including simple structure and good applicability, convenient maintainability, and lower price at the same time to emphasize meeting the requirement from construction units at different levels. Its lifting height is obviously increased thanks to its self-elevating and attached function. It is applicable for construction of different industrial, commercial, office, and civil buildings lower than 40 stories, and thus becomes an ideal service-building machine at home.