The present invention provides a transmission apparatus and a reception apparatus easy to sample data correctly by a clock in the reception apparatus. In a detection section 25 of a reception apparatus 20n, based on data output from a sampler section 23, both or either of detection of a phase difference between data received by a data reception section 21 and a clock received by a clock reception section 22, and/or waveform distortion of this data is performed. A detection signal indicating a result of detection by the detection section 25 is transmitted to a transmission apparatus 10 by a detection signal transmission section 26. In the transmission apparatus 10, by a control section 15, based on the detection signal received by a detection signal reception section 14, both or either of control of adjustment of a phase between data transmitted by a data transmission section 11 and a clock transmitted by a clock transmission section 12, and/or adjustment of an amplitude of the data is performed.