The invention discloses a PDA device of civil and architectural engineering GPS-RTK measurement integration, which is a PDA computer used for GPS-RTK data collection and processing and applied to civil and architectural engineering. The hardware in the PDA computer comprises a display, press keys and hanging parts, a host chip equipped inside the body with a dominant frequency above 400MHz, a bluetooth module and a GPRS module, a built-in data transmission antenna and a power supply; a built-in software system in the PDA computer integrates the data collection, processing, application and transmission of GPS-RTK, which greatly enhances operation efficiency and reliability, directly accomplishes the tasks like design and survey, construction survey, and geometric detection etc. of normal civil engineering (including highways, railways, port terminals, city roads and pipe network, hydropower project and so on), does not need the prior fractional work such as data downloading, indoor processing, outdoor surveying and designing etc., and obviously enhances the operation efficiency of civil engineering measurement.