Abstract　 　　 

　Cataclysmic Variables (CVs) is a category of active mass transfer, containing a white dwarf accreting from an orbiting companion. Undoubtedly, Non-magnetic CVs, Intermediate Polars and Polars constitute the most powerful probe to test the structure of accretion onto white dwarfs and the theories of angular momentum loss, which may elucidatethe long-term evolution leading to the formation of these ultrashort period binaries.Combining updated photometric data from our meter-class telescopes with part of well-calibrated data from the AAVSO International Database (AAVSOID), it has been demonstrated thatlots of novel discoveriesfor cataclysmic variables including strong evidences of potentialsubstellar objects orbiting cataclysmic variables with short orbital period, peculiar characteristics of transient events in low-state prototype polar AM Herculis, cycle-to-cycle variations inlight curves of many subtypes of cataclysmic variables and so on. Based on new-found details of period gap andorbital period analysis for special cataclysmic variables inside and around period gap,the standard evolution tracks of cataclysmic variables have been queried badly, since a large portion ofinvestigated cataclysmic variables indicateunexpected secular orbital period increase or stagnationobviously.These surprising contradictions may open new horizons on cataclysmic variables.