Subkelvin refrigeration is necessary for many frontier research fields such as condensed-matter physics,astronomical observation,and quantum computing.Dilution refrigeration utilizes the entropy increase of <sup>3</sup>He atoms when flowing from the concentrated phase to dilute phase to obtain cooling and has the advantages of continuous operation,large cooling power and no electromagnetic interference,which is the most widely used method at present.Aiming at research scenarios requiring small cooling powers,the condensation-pump dilution refrigerator utilizes condensation pump to achieve cold cycle of <sup>3</sup>He with no need of complex ambient pump systems and gas circuits and has become a new research topic because of its compact structure,convenient operation and low cost. A condensation-pump dilution refrigerator is built and introduced in this paper.The refrigerator consists of a mixing chamber,heat exchangers,a still and a cryopump and is precooled by a GM type pulse tube cooler below 4 K and an adsorption refrigerator below 1 K.The <sup>3</sup>He evaporates from the still,condensates in the cryopump and goes to the mixing chamber after being precooled in a tube-in-tube heat exchanger. By means of the multi-temperature measuring system,the cold cycle of the dilution refrigerator can be summarized as being comprised of three stages:precooling by the adsorption refrigerator,dilution cycle start-up and continuous dilution cooling,and operating characteristics of the system are analyzed.After testing,the lowest experimental temperature can reach 108 mK when the condenser temperature is 378 mK.Meanwhile,the temperature oscillation appeared and possible reasons are analyzed.In the future,it is planned to improve the cooling performance by 1) Adjust the spiral mode and position of the continuous tube-in-tube heat exchanger and 2) Increase the heat transfer area between the cold plate and the fluid in the mixing chamber to reduce the fluid-solid temperature difference. The refrigerator introduced in this paper can easily expand the many existing platforms working at higher temperatures,and effectively support the development of high-end equipment.