An assembly comprising a housing device and a casing having a pull-type locking and release structure, comprising: a housing , the housing including two lateral walls , a notch formed on each of the lateral walls and , an elongated groove formed along each of the two lateral walls of the housing and communicated with the notch , a pivot hole formed at the bottom of each elongated groove in the vicinity of the lateral walls , and a plurality of support blocks disposed at each of the lateral walls; and a locking and release member , the locking and release member including two arms disposed in the two elongated grooves , a rod connected to the two arms , a resilient element disposed at one end of each of the arms , a connection element connected to each of the arms , a fastening element connected to each of the connection elements , and a pivot protruding from one side of each of the fastening elements , the casing , having two fastening holes corresponding to the two notches , wherein when the housing device is inserted in the casing , the fastening elements are engaged with the two fastening holes to complete assembling; wherein the pivot is pivotally connected to the pivot hole , and when a user pulls up the rod of the locking and release member , the rod drives the two arms to move with respect to the elongated grooves and each of the support blocks restricts movement of the respective corresponding arm with respect to the respective corresponding elongated groove , the connection element pushes one end of the fastening element to move, and another end of the fastening element is away from the notch to be disengaged and released from the fastening hole of the casing ; and when the user releases the rod of the locking and release member , each resilient element elastically restores each arm to its initial position. a housing , the housing including two lateral walls , a notch formed on each of the lateral walls and , an elongated groove formed along each of the two lateral walls of the housing and communicated with the notch , a pivot hole formed at the bottom of each elongated groove in the vicinity of the lateral walls , and a plurality of support blocks disposed at each of the lateral walls; and a locking and release member , the locking and release member including two arms disposed in the two elongated grooves , a rod connected to the two arms , a resilient element disposed at one end of each of the arms , a connection element connected to each of the arms , a fastening element connected to each of the connection elements , and a pivot protruding from one side of each of the fastening elements , the casing , having two fastening holes corresponding to the two notches , wherein when the housing device is inserted in the casing , the fastening elements are engaged with the two fastening holes to complete assembling; wherein the pivot is pivotally connected to the pivot hole , and when a user pulls up the rod of the locking and release member , the rod drives the two arms to move with respect to the elongated grooves and each of the support blocks restricts movement of the respective corresponding arm with respect to the respective corresponding elongated groove , the connection element pushes one end of the fastening element to move, and another end of the fastening element is away from the notch to be disengaged and released from the fastening hole of the casing ; and when the user releases the rod of the locking and release member , each resilient element elastically restores each arm to its initial position. <EOS>