Based on over three thousand pieces of relativeseeking data from a certain online public platform, the basic laws of demandfront crime activities of trafficking in children in China during 19302015 were examined through spatial analysis and statistical analysis methods from the perspective of geography of crime. It is found that the main purpose of trafficking is forced adoption and high trafficking frequency occurred at low ages. Different age groups of male and female victims are in different proportions. The types of trafficking are mainly based on “family control type” and “lured adoption type”. The amount of crime shows a single peak in 19802000. The crime was significantly affected by the strike policy and population policy with a “seesaw” type of response. In January, the incidence of crime is high, which is related to the increase in population mobility and the last stroke of the criminals before the Lunar New Year. The length of trafficking, both male and female, are mainly concentrated between 15 and 33 years and the peak range between 22 to 29 years. It is estimated that the age starting the tracing is 15 to 39 years old and the peak interval is between 22 and 35 years old. This illustrates the longterm tracing and the importance of blood relatives.In most provinces of China, there are children trafficked in. In the eastern region, it can be divided into two parts,one part is in Henan, Hebei, and Shandong, and the other is in Fujan and Guangdong. The spatial trajectories of the center of gravity show the pattern like a clockwise approximation of the closed ring, which has the reciprocating characteristics. The forced migration process embodies the temporal and spatial variability of the child trafficking crime in China. Finally, according to the above research results, the sixpoint measures were put forward.

child trafficking crime; spatiotemporal pattern; demandfront; control countermeasures; China