The invention discloses a hydraulic pressure lifting operating handcart with a variable pitch. A left vertical frame and a right vertical frame are mounted on a bottom frame, a hydraulic pressure lifting device which is connected with a handcart platform is mounted on the left vertical frame and the right vertical frame, and a pedal control mechanism for controlling the operation of the hydraulic pressure lifting device is mounted on the bottom frame; a left fixing plate and a right fixing plate for fixing a switch are mounted on the handcart platform, a spacing between the left fixing plate and the right fixing plate is adjustable, and fixing detent holes are formed in the left fixing plate and the right fixing plate; the fixing detent holes are matched with fixing detents in the switch; a travelling wheel is arranged at the bottom of the bottom frame, and a braking device is arranged on the travelling wheel; limiting detents are respectively arranged at the upper end and the lower end of the vertical frame; handcart handrails are mounted on the left vertical frame and the right vertical frame; a lifting stop pin for limiting the handcart from moving is mounted on the bottom frame. The handcart disclosed by the invention has the advantages of being reasonable in structure, convenient and reliable to use, and high in working performance.