The invention provides a window lock and a window. The window lock comprises a lock hook and a lock piece, wherein the lock hook is fixed on a window frame; the lock piece comprises a fixed seat, an unlocking button, a lock tongue and compression springs; the window lock also comprises a lock cylinder arranged on the unlocking button; the lock cylinder is used for locking the unlocking button and the fixed seat; when the unlocking button is bounced up, the second compression spring pushes the lock tongue to be clamped on the lock hook to lock sashes; and when the unlocking button is pressed downwards, a wedged surface pushes a first slope, so that the lock tongue slides to be disengaged from the lock hook. The window lock has the beneficial effects that the structure is simple, the window is convenient to open, and can be locked through the arranged lock cylinder, and opening the window by a child is avoided, so that the safety coefficients are improved.