To dispose of sludge and construction waste and facilitate their common resource utilization, the solidification tests of sludge are carried out in the laboratory and in site. In the field test, the construction waste is used as aggregate and added to the sludge by 15% of the mass ratio of the sludge, and then the sludge solidified agent is added to the sludge. Sludge, construction waste and solidified agent are mixed evenly by mechanical stirring, and finally the solidified soil is cured. The laboratory test results show that when the content of solidified agent is 8%, the strength of solidified sludge is quite high, and the laboratory UCS of solidified sludge can reach 320 kPa after curing for 28 days. The cone penetration test and plate loading test in field show that the solidified agent has an obvious solidifying effect on sludge. With low dose solidified agent, the structure effect of aggregate is not obvious. When the content of solidified agent is 8%, the structure effect of aggregate is beneficial in improving the bearing capacity of solidified sludge and the characteristic soil bearing capacity can reach 325 kPa. The improvement rate of solidified sludge by structure effect is 71.05%, which facilitates the common resource utilization of silt and construction waste.