The invention relates to a foundation 
bearing capacity filling packing in-situ 
detector, belonging to the 
geotechnical engineering mechanics field. which comprises: a casing, a crossbeam, a load sensor, a transmission shaft, a sounding rod, a sounding head, a 
data acquisition processor, a control display panel, a 
communication interface and a power supply box; The invention is characterized in that: the transmission shaft, the sounding rod and the sounding head is connected with the bottom of the load sensor fixed in the inner cavity of the casing; when the sounding head is inserted into 
soil mass, the load sensor generates a changeable 
signal, the 
signal is sampled, amplified, calculated and displayed by the 
data acquisition processor, and sent to the upper 
machine through the 
communication interface for intelligentizing 
processing. The invention is distinguished from the 
penetration test apparatus, sand cone method and 
nucleon density apparatus used in current engineerings, can solves the following problems in existing technologies: 1, in-situ disturbing 
dehydration caused by drilling soil sampling, 2, 
radiation pollution of the 
nucleon density apparatus, 3, the time and labor consumed in digging pit and filling sand, 4, large error in 
spring force measuring element, 5, visual error in rule read value and impossibility for keeping data.