Marine monitoring buoy with improved structure

A marine monitoring buoy with an improved structure, comprising a first cylindrical buoy body (1), wherein a cylindrical portion (2) and a conical portion (4) are disposed on an upper side surface and a lower side surface of the first buoy body (1) respectively, the cylindrical portion (2) and the conical portion (4) are both coaxially disposed with the first buoy body (1), a vertical through hole (1a) is coaxially disposed in the first buoy body (1), a horizontal through hole (2a) is disposed in an upper part of the cylindrical portion (2), an upper end of the vertical through hole (1a) extends to the cylindrical portion (2) and is in communication with the horizontal through hole (2a), a lower end of the vertical through hole (1a) penetrates through the conical portion (4), a wind power generator (10) is disposed at an upper end of the vertical through hole (1a) through a first support frame (10a), two guiding grooves (1a1) are oppositely disposed on a side wall of a lower part of the vertical through hole (1a), a metal piston rod (12) is further inserted into the vertical through hole (1a), the metal piston rod (12) is in clearance fit with the vertical through hole (1a), a piston (11) is disposed at an upper end of the metal piston rod (12), sealing is provided between a side wall of the piston (11) and a side wall of the vertical through hole (1a), two sliding blocks (12a) are disposed on a side wall of the metal piston rod (12), the sliding blocks (12a) are in one-to-one correspondence with the guiding grooves (1a1) and slidably disposed in the corresponding guiding grooves (1a1), a spring (13) is disposed in both of the guiding grooves (1a1), a lower end of the spring (13) is fixed to a lower end of the guiding groove (1a1), an upper end of the spring (13) is fixedly connected on a lower side surface of the sliding block (12a), a fixing ring (12d) is disposed at a lower end of the metal piston rod (12), the fixing ring (12d) is connected with an anchor (7) through a positioning anchor chain (6), a battery cabin (2b) is further disposed inside the upper end of the cylindrical portion (2), a storage battery (8) is disposed in the battery cabin (2b), and the wind power generator (10) is electrically connected with the storage battery (8).