The utility model provides a lead yarn cylinder base with adjustable, the solid wood cellphone seat comprises a seat body, first yarn section of thick bamboo axle, second yarn section of thick bamboo axle, wherein, the pedestal is square, the pedestal top is equipped with the spout of " protruding " font, first yarn section of thick bamboo axle, second yarn section of thick bamboo axle construction is the same, install on the pedestal through the spout symmetry, first yarn section of thick bamboo axle, second yarn section of thick bamboo axle main part is half circular cylinder, two and half circular cylinder's after the installation straight wall is relative, first yarn section of thick bamboo axle, second yarn section of thick bamboo axle bottom all is equipped with corresponding yarn section of thick bamboo bearing board, yarn section of thick bamboo bearing board bottom is equipped with the slider, this slider activity assembly is in the spout, pedestal one side is equipped with the locked groove, the locking bolt passes the locked groove and is connected the locking with the slider. The utility model discloses adapt to the not yarn section of thick bamboo internal diameter of equidimension, effectively prevent the shortcoming that yarn section of thick bamboo internal diameter rocked when too big, then adorn the shortcoming of not advancing during the undersize.